Also, in the context of this thread, i feel we can safely discuss our sobriety and our secular rational approach to it without being told that atheism is an obstacle to sobriety, or that if you don't believe in the supernatural then you're not welcome... We can chat and debate stuff without it meaning we're full of resentment or don't have an open mind...
Just as if someone is religious or believes in god they wouldn't be told to go away, i'm sure they'd be welcomed, just that they should be prepared for the fact that people may well disagree with their view of the universe...
We're not all of one mind and we may disagree about stuff and debate it, but that to me is interesting and a good thing!