You're about 75% of the US population. This is almost as silly as asking "Are you an out of the closet heterosexual?"
Bushie is just trying to balance the books, albeit in my opinion ineffectually. Maybe this is out of line, but I wonder what else Bushie is proud about concerning himself other than being a Christian at the moment. Maybe he can put that on his mega thread if he wants. I might add that I am no more "proud" of being an atheist than I am of being a male - I just am. And I don't do closets.