Well ... you're sorta wrong about God "not changing His mind." The Old Covenant was harsh and rigid. The New Covenant is far more forgiving and gentle (although Christ will return with His angels and do some serious house cleaning). A woman was found committing adultery. Under the Old Covenant ... death was required as long as there were two witnesses. But under the New Covenant, Christ said, "He who is without sin ... cast the first stone." Of course ... nobody did.
Leaving your wanking for the apocalypse alone (Because, frankly, only really sick people would wish for the end of the world so they can say, "I was right!") you kind of miss my point.
We don't kill witches or people who work on the Sabbath or rape victims who didn't scream loudly enough because THAT'S WHAT YOU DO WHEN YOU ARE A FUCKING BARBARIAN.
The bible is filled with a bunch of truly messed up laws that you don't follow because you are not a barbarian (I hope. I still have my doubts about StalkerBob).
The point is, they were STILL Burning witches long after Jesus supposedly came up with the new rules.
Actually, your whole concept about salvation is kind of messed up... which is why it's a good thing it's not true.But ultimately ... you are correct. People who willingly rebel against God will end up in a hot place.
If Jeff Dahmner can get into heaven (after he found Jesus like you did) and Ann Frank is burning in hell because she didn't, that's all kinds of messed up, yo!