I want to hear a description of the several ways people arrive at the conclusion of eventual annihilation of the reprobate.
I want to hear the Reasoning, Use of Scripture, and What is each participant's concept of Annihilation. What does it mean, what does it look like, within eternity, what is its relationship to eternity? —For that matter, what does each mean by, 'eternity'? What really is sin and death? What is existence?
There are a lot of tangents to pursue, and probably most will be consider relevant to the OP (at least by me).
I think Gods Word is clear that only the Saints will be given and have eternal life, not the Wicked. The wicked will perish forever even though God has the power to resurrect, but at the end the wicked will be separated from Him and cease to exist as punishment, and sin will be no more. Now lets take a look and see if it is a eternal torment of sinners that happen with fires there are never quenched, and God and the saints watch them linger on. But then do the wicked get to live forever too, with the Devil in charge with his minions tormenting the sinners in a underworld, does it mean that the fire doesn't consume. Lets see what the scripture says.
The Devil from the beginning has tried to present God as a liar, who does not tell man the truth about sin, which Satan is the father of. Let start with Gen 2:15-17..
Genesis 2:15-17
15 And the LORD God took the man, and put him into the garden of Eden to dress it and to keep it.
16 And the LORD God commanded the man, saying, Of every tree of the garden thou mayest freely eat:
17 But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die.
Genesis 3:1-5
1 Now the serpent was more subtil than any beast of the field which the LORD God had made. And he said unto the woman, Yea, hath God said, Ye shall not eat of every tree of the garden?
2 And the woman said unto the serpent, We may eat of the fruit of the trees of the garden:
3 But of the fruit of the tree which is in the midst of the garden, God hath said, Ye shall not eat of it, neither shall ye touch it, lest ye die.
4 And the serpent said unto the woman, Ye shall not surely die:
5 For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil.
Who was telling the truth, God, or the serpent (Satan)?
Deuteronomy 32:1-4
1 Give ear, O ye heavens, and I will speak; and hear, O earth, the words of my mouth.
2 My doctrine shall drop as the rain, my speech shall distil as the dew, as the small rain upon the tender herb, and as the showers upon the grass:
3 Because I will publish the name of the LORD: ascribe ye greatness unto our God.
4 He is the Rock, his work is perfect: for all his ways are judgment: a God of truth and without iniquity, just and right is he.
And Christ is even clearer...
John 14:6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
John 8:44 Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.
So where are those people who are “dead”, we have those saints who died and are in the grave, and we have the wicked who went to the grave without Christ? Have they gone to heaven and hell, the answer is simple, when they die, both will end up in the same place. The saints await the resurrection and the life (eternal life) that Christ will give them when He comes. The wicked dead await their punishment the wicked alive, or those without Christ are simply the walking dead. If they will not choose Christ in this life, they will die the second death, which is final. Those of course who have never had opportunity to hear the Gospel, will be judged according their response to the Holy Spirit as God is merciful and judges all.
Romans 2:13-16
13 (For not the hearers of the law are just before God, but the doers of the law shall be justified.
14 For when the Gentiles, which have not the law, do by nature the things contained in the law, these, having not the law, are a law unto themselves:
15 Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another

16 In the day when God shall judge the secrets of men by Jesus Christ according to my gospel.
How could God who says that He is love, then burn billions of people in hell for all eternity, is that the God we serve? To the contrary, there is far greater scriptural evidence that they perish, cease to exist and sin and the devil are no more, than for those who believe in eternal torment.
per•ish (pµr“¹sh) v. per•ished, per•ish•ing, per•ish•es.--intr. 1. To die or be destroyed, especially in a violent or untimely manner. 2. To pass from existence; disappear gradually. 3. Chiefly British. To spoil or deteriorate.--tr. To bring to destruction; destroy.--idiom. perish the thought. Used to express the wish that one not even think about something.
Here are some scriptures about the fact that the wicked will perish.
Job 4:20
They are destroyed from morning to evening: they perish for ever without any regarding it.
Job 20:7
Yet he shall perish for ever like his own dung: they which have seen him shall say, Where is he?
Psalm 37:20
But the wicked shall perish, and the enemies of the LORD shall be as the fat of lambs: they shall consume; into smoke shall they consume away.
Psalm 68:1-3
1 Let God arise, let his enemies be scattered: let them also that hate him flee before him.
2 As smoke is driven away, so drive them away: as wax melteth before the fire, so let the wicked perish at the presence of God.
3 But let the righteous be glad; let them rejoice before God: yea, let them exceedingly rejoice.
Psalm 73:27
For, lo, they that are far from thee shall perish: thou hast destroyed all them that go a whoring from thee.
Psalm 112:10
The wicked shall see it, and be grieved; he shall gnash with his teeth, and melt away: the desire of the wicked shall perish.
Isaiah 41:11-12
11 Behold, all they that were incensed against thee shall be ashamed and confounded: they shall be as nothing; and they that strive with thee shall perish.
12 Thou shalt seek them, and shalt not find them, even them that contended with thee: they that war against thee shall be as nothing, and as a thing of nought.
2 Thessalonians 2:10-12
10 And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved.
11 And for this cause God shall send them strong delusion, that they should believe a lie:
12 That they all might be damned who believed not the truth, but had pleasure in unrighteousness.
2 Peter 2:12
But these, as natural brute beasts, made to be taken and destroyed, speak evil of the things that they understand not; and shall utterly perish in their own corruption;
Then we see those who will not perish but have the life that is eternal..
John 3:14-18
14 And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up:
15 That whosoever believeth in him should not perish, but have eternal life.
16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
17 For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
18 He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God.
John 10:28
And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand.
1 Corinthians 1:17-18
17 For Christ sent me not to baptize, but to preach the gospel: not with wisdom of words, lest the cross of Christ should be made of none effect.
18 For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God.
The fate of the wicked is they will perish, be burned up, suffer the fate of Sodom and Gomorrha..
2 Peter 3:9-12
9 The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.
10 But the day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up.
11 Seeing then that all these things shall be dissolved, what manner of persons ought ye to be in all holy conversation and godliness,
12 Looking for and hasting unto the coming of the day of God, wherein the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?
Jude 1:7
Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.
Sodom and Gomorrha suffered the vengeance of eternal fire, they are no more, they perished. It is one thing to disagree with a doctrine that scripture teaches, it is another to take up false doctrines that elevate Satan to the one in charge and leave the wicked to continue forever with him or maybe be 'purified' by him as some believe then go to heaven. The saints await the resurrection and the life which Christ promised, the wicked will perish and be separated from Christ and be no more.