When did you first start becoming a "Non-Believer"?

[Mister Agenda]

I was raised Pentecostal. I was quite devout as a child and in my early teens. So much so that I set out to read the Bible. I read the KJV cover-to-cover. Then I read The Living Bible cover-to-cover. That made an agnostic theist of me, and I started to develop a few skeptical bones around the age of 19 or 20 when I learned some teenagers had easily tricked the parapsychologists at Duke University, and that when they controlled for trickery their supposed statistical evidence for ESP disappeared. By the time I was in my mid-thirties, I was a full-blown skeptic of the paranormal, but considered myself an agnostic for the usual reasons. I returned to college to finish my degree (in psychology) and learned a little more about cosmology, and then had the good fortune of taking a logic course at the same time I was taking a course on religion with an Orthodox Christian professor who believed logic was on his side. Between watching the mental contortions the man went to to justify his faith while learning about logical fallacies and the proper placement of the burden of proof; I realized that I'm an atheist and keeping a space in my head for God is not being open-minded, it's wasting valuable head space. If a convincing reason to change my mind comes along, I will, and THAT is what being open-minded is, not hovering through life without ever landing on a conclusion.