You take 2 Thessalonians 2:8-12 to mean that everyone living during the great tribulation "received not the love of the truth that they might be saved". It does not teach that, nor are you in a position to judge who should be damned.
Nope...
2Th 2:7 For the mystery of iniquity doth already work: only he who now letteth will let, until he be taken out of the way.
2Th 2:8 And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming:
2Th 2:10 And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved.
2Th 2:11 And for this cause God shall send them strong delusion, that they should believe a lie:
The context is those who do not make the Rapture because of their rejection of the Gospel and who then go on into the Tribulation...God will send them strong delusion so that they will never accept Jesus, but be damned...They had their chance...