Well, there's always Richard Dawkins' caveat, quote-mined so gloriously for Ben Stein's “Expelled“ failure: that even if life here began out there, and if that life began somewhere else etc, you can only push that bar so far back. At some point, you're still going to be faced with some form of Darwinian evolution; and you 'only' have thirteen thousand million years to play with.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'