"What would you do if you found religion existed everywhere there was "intelligent life"?"

That's a very good question, Jon! Somehow, though, I don't think that my first act would be to rush out and sign up for a religion. To misquote my dear old Mum: " Just because the whole Universe is sticking its head in the fire, doesn't mean that you have to as well!"

But if some alien could convince me that God exists though ... (?)

I agree with everything that you said on 19 Jun 11 - 4:52 AM, 'Suibhne Astray' - that's more or less what I think about religion too.

By the way, I don't describe myself as an 'atheist' but as an 'agnostic'. As a RC priest said to me once: "Ah! I see. A fence-sitter, eh?" To which I replied, "yep!" You see anything is possible but the existence of God doesn't strike me as very probable.