I'd like to say I've always been atheist, but I doubt that is really true. When exposed to religion by my friends (my parents are quite secular) I had an indifferent attitude towards what they said about God. I left them in silence, not really piping up and saying how I felt inside. It was always awkward when there was prayer but I just bowed my head and sometimes looked around to see if everyone was bowing their head. At a christian party they were all singing christian tunes and people would just start off singing and everyone joined in. I started singing "Old McDonald Had a Farm" and everyone went silent. That was not a christian song. They didn't think it was funny. Nor did they chime in and sing with me, I just stopped singing. I guess it wasn't that I believed or didn't believe, it just never was a question. Obviously alot of my friends believed. But they never talked to me about it. I read one post that said when he first heard the word atheist, something clicked and he said that is what I am. I suppose that might have happened to me but I don't remember it. University I was definitely an atheist. I remember telling my friend that my belief that there was no God was as concrete as his belief that there was. That really shook him. We didn't remain friends. As for the years since University (of which there is 17, I'm now 38) I have been an atheist through and through. Even obsessed at times with thinking about evolution or reading about religion from atheists most especially Nietzsche.