GraziLovesMary, I'm gonna call you Hunter.

Hunter, I like the way you operate.

Anyway, the subject at hand. At this point, I have some ideas about existence, and they are somewhat similar to yours.
At this point, I've read most of the Buddhism related articles on Wikipedia, and between that and recent smoke/think sessions, am fairly certain that we exist outside of human existence. That is to say, human existence is just a frame of reference for our minds. I think that there are other frames of reference.
I would not be surprised to find out that the whole idea of reincarnation comes from our predisposition being a function of our perspective (theory!).
My idea is that when (if) you live multiple lives, the common denominator is perspective. The reason that you behave one way or another is because of what you see from your perspective.
I'm not sure how well I am communicating this idea, but that is the best I can do at this juncture.

As far as living as a human, people are irrational by nature, but have the ability to recognize their nature for what it is.
The best one can hope to do is come to terms with what it means to be human, and try to improve.

I think it is pretty cool that you've researched so much, Hunter. Most people don't give a fuck when it comes down to the essential thing.
I have to admit, I am not really interested in the underlying foundation of existence so much as I am interested in understand existence, but I really appreciate your system.