[Sethomas]

Well, when I was eight and entered into a nation-wide contest, I looked at it two ways: either my odds are 1 in 50,000, or it's half and half: I either win or I don't win. The probability of existence falls into the same logical fallacy--there's an infinite possibility of nothingness since all non-existence outcomes are identical, and a finite possibility of existence*. It's impossible to determine what the precise odds of a Theos (not a god per se, but any self-causing first cause) existing are, and it's an asanine to even try because it's self-evident that it does exist. It's impossible to step outside of existence and view probability arbitrarily.

*The probability of existence is finite due to ratio ad absurdam. Infinite possibilities deigns that any conceivable reality is a viable option. Thus simply by thinking of any logically impossible scenario limits the realm of possibilities of existence. I can think "There can be a universe that exists with standing laws of gravity in which a ten-pound object has more mass than a two-pound object." This is a logical self-contradiction by the laws of physics, and is thus impossible. Therefore, existence's probability is finite.