Matthew 25:46 And these shall go away into everlasting punishment: but the righteous into life eternal.
Revelation 14:11 And the smoke of their torment ascendeth up for ever and ever: and they have no rest day nor night, who worship the beast and his image, and whosoever receiveth the mark of his name.
2 Thessalonians 1:9 Who shall be punished with everlasting destruction (olethros) from the presence of the Lord, and from the glory of his power;
olethros - 3639 /ólethros ("ruination") however does not imply "extinction" (annihilation). Rather it emphasizes the consequent loss that goes with the complete "undoing." [http://biblehub.com/greek/3639.htm]
You're arguing against Malachi (and other scriptures) which clearly show that man is going to be burned up like stubble...into ash.
In addition you're advocating that man can have immortality without receiving the gift of immortality from Christ.
In addition Vine's Expository Dictionary says about oltethros says that it means "ruin, destroy, death, for the destruction of the flesh, said of the external ills and troubles by which the lusts of the flesh are subdued and destroyed"
In addition:
John 3:16 “For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.
The word translated "perish" means absolute destruction, to destroy full, to kill.