I used to call myself an atheist, but I have since replaced that with just a "no preference". I used to campaign against religion when I was younger, but I wised up eventually and realised that most people just need something to live for. Who am I to take that from them?
I have always been interested in Buddhism though, and its concepts of self improvement through meditation and learning to fight greed. When applied to my life directly, I have seen immediate results.