Always been interested in theology and hearing about other people's belief systems. Been a self proclaimed agnostic my entire life since I believe in a higher power, but don't subscribe to mainstream religion.
Inexplicably, with everything that's happened to me in my life, I believe the afterlife has something to do with our own beliefs. I believe personally my afterlife will be much better than this lifetime. I believe in the possibility of the infinite, that we can experience true connection, joy, and happiness. All that we need that wasn't given in our short limited lives. I don't believe it gets worse, but only gets better from here.
While I'm agnostic, I grown up Cao Dai and Buddhist, and always believed in some sort of balance. Even our own bodies attempt maintaining homeostasis. This lifetime is hellish, a lot of us are bound to suffer one way or another. Mental illness, physical illness, heartache, grief, tragedy, and the ever encompassing darkness that consumes a lot of us. Every human ends up where they are because of environment and genetic factors. We're molded by the stimuli around us, and the interpretation of that stimuli (and our method of interpreting stimuli changes depending on how we're raised, our education, environments, etc). With all that said, I believe the rebound to maintain balance in our afterlives will only provide us ways to obtain sustainable happiness.
I respect all religions. I however, believe in a better afterlife that's afforded to everyone. Every action in our lifetime is temporary and carries temporary change. Even the most heinous of individuals are victims of their environment, victims of life circumstances. I feel strongly that everyone can thrive given correct circumstances. Not all of us can thrive and end up living and dying horrible miserable deaths. The particularly heinous inflicting their hurt on others.
I believe we all have a fair shot in the afterlife for happiness. You can call it a feeling based on specialized religious experience. Belief has always seemed to have the greatest sway on me spiritually. Like some other commenters, I definitely believe some people can end up reincarnated, or occupying their own realm so they can experience true freedom without restriction.
For me, it makes the most logical sense that the things given to us in the afterlife will be tailored toward allowing us to flourish. Being able to obtain true sustainable happiness that'll last us an eternity.