Atheist here as well. I think my belief in god went at the same time that my belief in the Bible as from a supernatural source went, and all of that was when I was still a Witness, more or less.
Jaguarbass: You're in an odd place there. It sounds similar to where I found myself for a while - knowing that Genesis was utter nonsense if you tried to take it literally, yet, because of my JW background and years of studying the ideas in the Evolution and Life How Did It Get Here books, I was unable to accept evolution.
At one point I simply decided to research all those questions the Witness literature had raised about evolution. I found really satisfying answers, ones that made complete sense with my own life experiences.
One of the most powerful points for me was reading the comment of the man (his name escapes me at the moment) who has been in charge of he human genome project. Now this guy is a devout evangelical Christian, and to paraphrase him, he stated that if Darwin had decided to invent a body of evidence that would prove evolution beyond a doubt, he couldn't have come up with a better idea than what we find in DNA and the genome project. I can get the direct quote if you'd like.
Also, I've found that using mathematics to "disprove" evolution is a very slippery slope. The odds that a particular person will win Powerball or the lottery are astronomical, but you know what, it happens everyday.
Threestars: Buddhism, like Taoism, is more philosophy than religion, at least that's how they started. They allow you a full belief in science and evolution and have no need of a god. Personally, I would say that taoism has been the biggest influence on my thinking.
S4