I was raised in a "Christian" home but did not become serious about my faith until I was 15 years old. I was a radical and experienced a wide variety of stages over the proceeding 13 years.
Over the last 2 years I have struggled deeply with issues of faith to the point of being ready to let go of everything that I knew and held on to. I have a much more detailed description on my blog
here.
The real kicker for me though was everything surrounding the resurrection of Jesus. I did an analysis of it over at my other blog
here.
There are really some aspects of being part of the "club" that I really miss, but I just can't really reconcile many of the ideas that I used to have with various other things that I have experienced.
While some lose their faith and become anti-religious I have managed to remain neutral about things as much as I can. While I may have my own differing views these days, I can still have a conversation with those of faith without feeling like I must win them over to my side of the fence.
It takes a little bit of everything to make the world go 'round I guess.