What specifically made you stop believing in God and the Bible?
The problem of evil
Lack of evidence, or rather, redefining what evidence really is
The history of and division on both subjects
Sex, drugs and rock n roll
Was it a steady road of doubts or it was reading one book or one major event that made you realize the Bible was not what it's claimed to be?
My doubts began in my early teens and by the end of them, I left the religion. Leaving belief completely took a bit longer but it was interesting to explore other angles and try to understand other people's beliefs. It still is, actually
I do recall significant events, discussions and personal revelations along the way that swayed my convictions but no one particular "aha" moment.