If I make it to heaven, I would be a bit startled to see Hitler there.
OR any number of other mass murdering scumbags.
Hitler is not in any kind of heaven. In the after life he probably found himself in the lower planes that are dark and bleak. He would spend as much time there remembering what he did in life until such time as he regretted his actions. At that time he might be allowed to reincarnate to face karmic debts, These debts are so enormous as to
be crushing for his soul, as it is hard to see how he can ever pay for all the suffering he is responsible for.
He must account for every action and its reaction for as many lives as it takes to resolve his karma. Such is the forbidding nature of Hitler's hell.
Sounds good to me. Or burning in hell. Either way its just wild speculation and wishful thinking. But I hope you are right.
The other possibility is like when a mean coyote wolf lion hippo cougar bear or dog dies they just die just like good ones do.
I believe you get one shot at this and that all the humans that suffered while here while tragic is just life. No heaven for the whale that got harpooned in the 1700s. No heaven for the beagles and monkeys we experiment on now and no heaven for us.
Our job is to make heaven here now. You can speculate but better you work now to make your life and the lives of others better now. If there's something after you'll be rewarded and belief is not required.
When a living organism dies, especially higher animals like us, our brains and everything the brain was which defined us stops working. Thus we and everything we once were ceases to exist. Death then is the end of consciousness and experience. There's no way for anything to come after death because everything we had which enabled us to perceive reality and experience our enviroment isn't working any more. It's akin to how if you touch a live power line you'll get a shock. But if you stop the power going through it it's just an inert cable. We're inert when dead, there isn't anything coming up next.
A more fascinating question to me has always been what exactly is different from the last moment we're alive, to the first moment we're dead? All the matter is still there but stuff stopped working right and we died. But can't we just restore what isn't working and restore life? Kinda Dr. Franky but when ya don't believe in afterlifes ya tend to wonder what death is exactly.
Currently we say death is the suspension of neural function. Ok, so what's a working brain if not a brain with some electricity running through it. Why not just shock the dead brain ala Frankenstein or Star Trek: TNG? When "Dr. Crusher" restored a dying person she shocked their brain. Not their heart.