I was raised christian (church of scotland, presbyterian). My father is a church organist as was my grand-father (on my mother's side). I quickly realised it all seemed like bullshit to me, because many of the beliefs I was being taught didn't seem to be about treating other people with respect. I heard other "christians" trying to justify racism, sexism & homophobia all because the bible apparently said so. I looked up the bible and concluded it actually said fuck-all about it, although it had plenty to say about not judging others and respecting all others.
So, I was then atheist for a bit, eventually, after a lot of reading, felt that paganism worked for me. Although I don't view it as a religion that I follow, as I don't believe in any sort of god(ess) figure heads, either mono or poly theistically. But I do subscribe to its general view of treating other people as you would have them treat you, allowing people to do/say whatever they like so long as it doesn't hurt others (hence things like racism are wrong). When I say "hurt" I mean emotional & mental, as well as physical harm, so things like someone trying to bully others is considered wrong.
So I think I'm both pagan & atheist (philosophy=pagan beliefs, atheist because I'm not "religious" as such).
On a side note, I know some people who are genuine christians, who live their beliefs rather than just treating church-going as a social club, but even so, I find some of their views to be extremely mis-guided, often because they seem to get too caught up in the exact wording of a bible (which, given the number of translations & language changes over the years, is like a game of chinese-whispers) instead of the overall message it has about just being a decent fucking person to others.
"The gene pool could use a little chlorine"