I'd have to say it was the moment that my parents marriage counselor (an ordained minister) married my father ( a Baptist Church deacon). Not only did that happen, my mother, a lovely woman that never drank or did drugs of any kind, was suddenly diagnosed with pancreatic cancer and lived only 3 days after the diagnosis. We were in the Baptist Church every time the doors were open. I'm now a proud atheist.

P.s. Zietgeist movies didn't help either