I havent yet taken the time to read this thread, but I'll add some of my thoughts.

Basically my atheism comes down to this: the more I learn about the universe, the earth, the origins of life, and the nature of human psychology, the more profoundly wrong and narrow minded the bible seems. The bible is a collection of two thousand year old superstitions, rules, and moral fables. It's an interesting book, a glimpse into human beings in a much more barbaric time. It's certainly interesting. But the more I learn, the more wrong it is about the origin of earth and the birth of the universe. For example, it exhibits such a profound misunderstanding of what the earth and the sun are. The earth is just a planet, the sun just a star. The earth is 4.3 billion years old and was certainly not created for the dawn of human civilization. Evolution is real.

And when you look at all of these glaring factual inaccuracies, I am forced to ask: how is this the word of god? It seems far more likely that it was a snapshot of human opinion about life, what it meant, how it formed, and how it is meant to be lived. That is why I reject organized religion. It all stems from a rigid proclamation of what it all is and what it all means, when a human beings interaction with the universe is far more open and free flowing. I am comfortable with the knowledge that there is a great deal I do not understand about the universe, and I'm fine with that. I know that in many situations I will be faced with moral ambiguity, and I'm fine with that too. I trust my own morality above what somebody else imposes on me.

That is simply why I reject organized religion. That part is easy. My actual feelings about god are much harder to define. Personally, I find the existence of a god unfathomable. It made a lot more sense when we did not know what was out there in the sky, when we thought of the heavens as separate from the earth. Now, we understand the sheer scale of the universe as well as our place in it, and it makes a conscious, all knowing and all powerful creator exceedingly unlikely. I cannot rule out the existence of a god entirely, but I'm 99.9999% sure. I'm still leaving a sliver, but its a damn small sliver.

That about sums it up.