I grew up in the 70s, and was dragged to all sorts of S. Baptist and other holy roller churches. They would show creepy movies to us little kids about the rapture and the Book of Revelation. I would have nightmares all the time. I saw so much racism and hypocrisy that I knew was wrong then. 1/2
I finally got over the last little bit of fear of hell and satan when I was 19/20ish. Note that it was only the fear part keeping me kind of believing in that crap. 2/2
My first step was at Bible camp when I was 10-11. It was "get filled with the Spirit" night, and though I sang and prayed the same as everyone else, I didn't start speaking in tongues. For years I thought I'd been personally rejected by God.
-same- Not at a camp but a wild Pentecostal church where everyone did it, I think I faked it once, I was 9 or 10 years old. I got shipped off to plenty of bible camps though over the years (aka: free babysitting)
I learned several ways to fake speaking in tongues at the same Bible college where Jim and Tammy Faye Bakker met. The History of Christianity class I took there was another significant step towards realizing my own atheism.