Supposing that I had irrevocable proof or at least had been persuaded that some x-ian group was right in their interpretation of God; that we exist in a universe where God dictates who goes to heaven and hell according to who obeys God's orders.
In such a universe I would have no choice to hate God given that such a being invested us with free will and then punishes us for exercising this in the best way we know how. It'd be like a friend giving you a really cool christmas present and then setting you on fire for all eternity because you didn't play with it right.
Think about it: what right would such a being have to dictate that people not given full opportunity to even figure out the rules of the game (let alone make the right choices) be punished for all eternity? Hell no. Perhaps I'm too stubborn for salvation, but I figure that's the way God made me, and that's the way he's going to have to live with me.