As time goes by, you'll forget more and more, until you lose the ability to speak, object permanence, your mother's face, and the ability to focus your eyes - at all.

If there's any part of you that's aware of this process, it would be terrible. The worst part about having Alzheimer's, my father-in-law once told me, was being aware that he used to be more; that he couldn't remember things, but that he could remember once being able to remember them. I think it was a small blessing when he moved past that stage, and was merely angry and frightened at a world he just couldn't understand anymore.

Wait... what were we taking about? Reverse-birth? You know, many civilizations didn't consider children real people until they were a couple of years old. Before that, they were just dumb animals with some potential; perfectly legal to kill. An adult horse has more self-awareness than a 1 y/o. By the time the doctor's shoving you back where you came from, you're barely human anymore.

I can't wait to see the angry downvotes on this one.