I personally feel (no science involved!) that it's about 50/50 on this board. And I feel that figure of Atheists would be much higher than the general population because to have been a witless and now not be requires determination, intelligence and a very questioning mind. This leads a lot to reason there is no god.
Personally I have followed the typical route of Christian - Agnostic and now I'm leaning towards Atheism, but also quite like the Deism belief, Which accepts 'God' may have started things off, but now has no interest in what goes on here.
Poppy