The universe is huge, maybe even eternal. So there's a huge number of planets, each with other conditions. It might bea coincidence that Earth supports life, but it's not coincidence that we are living on Earth and not on Venus.


If there was a creator then he/she/it would have to bee even more complex and then we would have to ask: Who or what created the creator? (If you say he has always existed, why can't that be true for the universe?)