Not if you understand you already came from the dead. Before you were alive, you weren't alive. So the very thing you claim to be unlikely, already happened at least once. You went from existing as nutritional elements to an animate life form. And even before you were that, before anything was alive, it was non-living matter. You seem to agree with that much. If it can happen once in a Universe with an infinite amount of time in which things can happen, why can't it happen again? Just as Dawkin's related in The Blind Watchmaker in regards to the animation of Life. It could be an extraordinary rare event, but given enough time (which the Universe has plenty of), it can happen. So why can't you be reanimated as some different life form at another time far in the future? Your memories, personality, body, and relationships won't be conserved and, actually, they are not important to preserving who you are. All that matters for you to be "reincarnated" is that the matter that represents you, no matter how small (though I can't pretend to know the exact source or size), gets reused in the formation of another life form. Like a person waking up from a long coma with permanent amnesia, you will remember nothing, you will not be who or what you were before, but you will be the same consciousness doing the perceiving and feeling for the new life form that you are as you were the consciousness that did the perceiving and feeling for the past life forms that you were. You just won't know it, as you don't really "know it" now.