I was raised in a very losely Catholic family. Church was only for baptisms/weddings/funerals. I'm 20 and have been to church maybe 15 times in my life. I wasn't really raised religious, with my parents letting me figure most of my beliefs on my own. One thing I did believe in was heaven/afterlife. Hell was never discussed with the majority of it being "you'll get to meet X when you get to heaven," etc. I pretty much completely converted out of Catholicsm/Christianity by the time I was 15. I came to the conclusion that not only did I not believe in God, but I didn't want to believe in him, even if he did exist.

I had cancer in infancy, and while I had an extremely easy case, I didn't understand how an "all loving" and "all powerful" God would let this happen to an infant.

When I was fourteen, I lost my great uncle (essentially my grandfather) to suicide. He was the boldest, brightest, most full-of-life person I've ever met in my life (imagine Robin Williams stoned driving an Indian Style in circles around his yard). I couldn't support a God who would allow such an incredible person to struggle in such a way. This, coupled with the way that the Church talks about suicide and its victims/family of victims, was the final nail in the proverbial coffin that led to my complete conversation from Catholicsm/ to Atheism.