I'm not going against anyone beliefs, just thinking
Have you ever though how the nest life would be? For instance if we have been going through different lives as humans, but don't remember the previous one, or will not remember the next one?
What if weird dreams you've had of different experiences you've never actually experienced were that of your previous life? Or done things you knew you never could on your own, but somehow gotten through it with either mind or physically.
Maybe the choices in this life will effect how well life after this one will be. (Like if you're born with a silver spoon in your mouth)
Once again, just simple theories, they can be fun to think about if they were real, well, proven.