A: well, All of the Greek gods apparently lived on the mountains of Olympus. However, people have now climbed the Olympian mountains, and there isn't a sign of a single supernatural phenomenon caused by any of the gods there, much less the gods themselves.
I think it more as saying "zero is not a number". After all, do religions need a god? Not at all - look at Buddhism. A religion is a way of seeing how the world works. Christians believe there is a sole god, and in heaven and hell. Hindus believe in many gods, and in reincarnation. Atheists believe that there is no god, and no afterlife.
Also, I completely respect people's beliefs as well. I realize that I sounded a little critical in my original comment, so I apologize for that. I just want atheists to realize that it IS at the end of the day a belief like any other.
P.S. What's wrong with being called a religion? I just don't understand that.
P.P.S. If I was forced to make a decision to believe in something, I would say that I believe there is a god-like entity, probably not omni-benevolent, maybe omnipotent (in our universe) and while not omniscient, probably knows a lot. I won't bother explaining here why, but there are reasons.