I wanted to be a warrior for Christ. I went to private christian schools all through middle school and was very devoted.
The moment that it clicked that Christians were irrational was in 8th grade. I'll never forget it.
My middle school was "preparing us" in the last 2 months before graduation to "fight the good fight" and hang on to our religion even though high school would challenge us with things like evolution.
They gave us a 2 month course on atheist arguments and how to counter them. The effect was SO ironic. Finally I was exposed to the opposite opinion and awakened my mind for debate. The answers that they gave were so irrational; such petty sidesteps.
The very first class, I got there all excited to learn how to defend Christianity and the topic was evolution. Of course, I knew all about evolution but had never thought about it as being wrong or contrary to the Bible.
(Side note: My parents didn't try to brainwash me like the school did, so they taught me other religions and other theories so that I could have the facts and draw my own conclusions. My parents were by no means radical (LOL) they only sent me there because they thought being around good people would prevent me from joining a gang later on.)
The teacher started by teaching evolution from a theist perspective (facinating, by the way, in retrospect) and finally started making the arguments.
The first one was: "Think about it. If we were evolved from monkeys, then why are there still monkeys?"
I was dumbfounded. Her argument was stupid. It was from complete ignorance. I had looked up to this woman and listened to what she taught about the Bible. Now she was wrong. Now she didn't do her homework before she taught. What else did she have the wrong answers to?
I spent the next two months pouring over the Bible and finding inconsistencies and troubling thoughts and wrote them down to ask the Bible teacher. Finally, I took some of these questions to her and the answers to half of them were (seriously): "God works in mysterious ways. His thinking is higher than ours and we can't understand his plans."
This was the second click. I walked out of that door an agnostic, later to become an atheist who can "defend my lack of faith" thanks to my Bible teacher.
What was that moment for you?