LOL! That's what I was disputing...I don't think that their belief, or lack thereof, is irrational. I don't agree with them, but I don't think they're irrational at all. If anything, they are perhaps a bit TOO rational, and that, to me, helps explain their lack of belief.
The belief that without God there is right and wrong is illogical. I wasn't talking about the lack of belief in God.