>>749325You just die, you don't think or feel anything. You're so relaxed you don't even feel time passing and you stay in that state forever. Nothing to worry about, but bviously you don't want to die young or in pain. It's only a bad thing for people who are still alive.
Heaven/Hell or any kind of reincarnation aren't answers because eventually you'd have to leave heaven/hell or it's not plausible, so you still die. Same applies to reincarnation, eventually everything dies.