A leaf in the tree of probability

Sometimes I wonder whether Descartes' duality is true after all. It seems that often times I found my mind separating itself from the body as if the spiritual 'me' is floating around looking down at the corporeal 'me'. And everytime this 'out-of-body' experience happened, I always asked myself these two questions, "What am I doing here?" and "How do I get here?". And then I'd trace back the major events (major according to me) that lead to me being at that particular place at that particular time. Would I be there if I did that or that? What if that never happened? Or what if it happened? Those questions that I know will never have answers (I'm masochistic that way) realising that my life is just a leaf in the tree of probability. After 3-5 minutes of floating around and asking questions, the mind would 'snap' back and it would soon be followed by a long sigh.