Great to read people talking about this subject with such open-mindedness. If you realize that you are a spiritual being who is here to learn, I think reincarnation is an obvious offshoot from that; as one life isnt nearly enough time to evolve our consciousness. I think that we don't remember our past lives, simply because its of no value to. its the lessons that we learn that are the important thing, and they stay with us at the root of our being whether we remember the specifics or not. Like a long forgotten childhood trauma can still affect us now even if we a re not consciously aware of it.