[Serious] What God's justification for eternal torment?

[SuicideCommando01]

OK listen, I get that God has rules and all, but when it comes to punishment, why does God need to punish us with LITERAL FIRE? Why BURN BILLIONS of people as punishment for "not accepting my son" ? and Why for ETERNITY? That has to be the most fucked up thing imaginable, that to me is NOT of justice, NOT of love and certainty NOT righteous, if anything, its barbaric, its savagery, its inhumane, and most importantly, its EVIL. And don't say "No they actually do die a second time in the lake of fire" because that "holy" book of yours is filled with contradictions. God cannot deal with sinners in a civilized, and humane matter? Why not the punishment for not accepting god or Jesus be: You die in this life, thats it, no heaven.