Why do people think that low probabilites = impossible? Just because the probability of humanity being here by chance are trillions to one against, doesn't mean that God intervened! It just means that an extremely unlikely possibility happened. If it HADN'T happened, we wouldn't be here to notice.
The question they're asking to prove the existence of God is 'what is the probability that humanity evolved by chance'. The real question is 'what is the probability that humanity evolved by chance, given that we are here'.
Why do people pick out Earth's uniquities and say that they must have something to do with life? There are billions of uniquities that Earth DOESN'T have. If Earth didn't have a huge satellite but did orbit a Black Hole, then the life forms that may have evolved might say that life can only evolve around a Black Hole! So Earth has a huge moon, orbits a single star, and is just the right distance from that star to make life possible. Yes, that's unlikely, but IT CAN STILL HAPPEN! And, to reiterate, if it hadn't happened we wouldn't be here to discuss why it hadn't happened.
Message to all die-hard Creationists: Life is most likely an accident. We're here because of a long string of coincidences. Accept that unlikely things CAN happen and stop trying to use flawed statistical arguments to support your case. Believe what you want and let others do the same.
Now, someone please close all 'Creation vs. Evolution' threads, because they never go anywhere.