Are you misunderstanding me?
Hades and death are not the world but since God is destroying both shows that God is saving the world and if you examine your heart you will take this seriously:
1Co 15:22 For as in Adam all die, so also in Christ shall all be made alive.
1Co 15:23 But each in his own order: Christ the Firstfruit; then,
those who are Christ's at His coming.
1Co 15:24 Afterwards the end comes, when He shall have delivered up the kingdom to Him Who is God and Father, when He shall have put an end to all rule and all authority and power.
1Co 15:25 For it is ordained that He reign until He has put all enemies under His feet.
1Co 15:26 The last enemy to be destroyed is death.
1Co 15:27 For He has put all things in subjection under His feet. But when it is said that all things have been put in subjection, it is clearly evident that it does not include Him Who put all things in subjection under Him.
1Co 15:28 But when He has put all things in subjection to Him, then shall the Son Himself also be subject to Him Who put all things in subjection to Him, so that God may be all in all.
God bless you!