I believe life is lived in order to learn; therefore, your theory does not equate to full scope learning. if our spirit is able to learn then we would need no physical life at all.
the spirit world is life in simulation, the real thing can only be lived in the flesh. one time is far from enough, and physical life surely exists on other planets as well.


Learn what? You can't even remember the mistakes you made in past lives.

Seems a ridiculous learning system. You have to keep coming back here over and over and over to learn something you won't remember the next time.