I suppose that, after I die, the molecules which comprise my body now will eventually change and turn into something else.
I don't really believe in a soul, although even if I did, it seems clear that no one ever actually has any conscious memories of any past lives, so if there were any lessons to be learned, they would be forgotten by the next life. For all intents and purposes, *I* (and all I know, all my memories) would cease to exist, even if my soul (assuming I have one) ends up in another body.
That's close to what I think. Maybe there is an eternal component of consciousness that is everywhere, call it potential where it's pervasive throughout the universe that enables animate matter, once the proper conditions are met, the molecules necessary for life fall into order for it to happen as it was when the lights turned on for us and we became alive.
Perhaps it's a form of energy or something similar of which replication can tap or harness consciousness, however this potential is not actually any traveling soul with intact memory and the like as others believe, which I don't think exists for precisely the reason we have no real lasting actual memories of past lives places or events.
Reincarnation , the version at least where there is a traveling intact soul that one's identity is preserved and all a person's memories just has way too many holes in the theory for it to be viable worth considering, and that includes those people who have recounted accurately of past people places and events that actually existed. As astonishing as it may look to others, it's still not at all convincing as there are too many factors and questions around that can debunk it fairly easily.
Because of that, the ego of the person (or other form of life) is the only thing that dies a true death , and that you only live once in that context , but life itself, the phenomenon of consciousness/awareness is a different story, and I think it's that latter part that will continue for infinity where this experience will occur over and over and over with death and life.
As some people put it, " Into the coffin, out of the coffin".