Over at Secular News Daily there is an article by Gordon Douglas called "Reasons for disbelief: The top ten reasons I am an atheist." I always find those sorts of discussions or essays interesting, so I thought I'd comment on his reasons and see if they correlated with my own.
Other Religions Exist. That one's not convincing. You can believe your own religion is the only true one. That idea had little influence on my atheism.
Faith is Rewarded to the Same Degree as Disbelief. True, but not something I really thought about until after I had already lost faith.
God Can't Be Proven. I would put that instead as, there is no convincing evidence of God/gods. This is obviously a key influence on most atheists being atheists.
The God of the Bible Can be Disproved. Not true. Even though the God of the Bible appears purely fictional as Douglas notes, it is theoretically possible that he could exist.
Religion is, By Nature, Deluding. Absolutely. But again, that's something you see much more clearly after you leave it.
Science is Obviously Better. Except that there are plenty of people who seem to have no problem being scientists, or pro-science while still being religious. This had no real impact on me becoming an atheist.
The Origins of All Religions are Clear. Yes. Once you really start thinking about it and questioning it, the idea that religion is just man-made starts to creep in -- unless you beat it back with irrational faith.
There's No Difference. Between religion and a so-called "relationship with God." Yes, this false assertion grated on my nerves even when I was a child. Why was it that my nominally religious friends saw our family as very religious, yet I was told we weren't following a religion, and that "true" Christianity wasn't about being religious?
Religion is Destructive. This was never a reason for me, and I think it can be overstated. Religion also has positive effects.
Christians Don't Really Get Persecuted. This isn't as stupid as it appears, just a bad summary line. What he means is that Christians in America are not persecuted as some claim to be. That's true, but had nothing to do with me becoming an atheist.
Evil Exist in the World. Yes, the problem of evil has probably made many atheists, along with all related questions regarding the supposed nature of God. From a philosophical standpoint, I'd put that whole category as the number one reason I rejected Christianity. Outright atheism came later though.