I have fantasized about a secular technological possibility for reincarnation (or afterlife). It's not outrageous nowadays to consider a future tech that allows taking a backup of your brain and restoring it later in a compute substrate other than your brain. The effect would be you waking up with your memories and personality in some other place out in the far future. Now, perhaps, our brain is being constantly backed up in the nature. Perhaps, if physics gets to the bottom of everything, we can travel far enough out into outer space in an instant, and look back at the brains of people on earth as they were an arbitrarily long time ago when light bounced off of them to reach that far out, and that with insane optical zoom and perfect neural resolution, so they can restore them? Whether you wake up in a hell or a heaven, is another question.