Stumpmaster,
[Funny, it's actually a main plank of Calvinism that reprobates remain lost and dead in their sins]
Reprobation is a true teaching.
[because God denies them the benefit of faith, repentance and salvation.]
They are rejected because they love sin and hate God and His truth,
Do not blame god that men love sin.
2thess2;
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.