I'm an agnostic atheist, even though I say that I believe there are no god(s) in existence and never have been. I am 99.999% convinced that there is no such thing as a god, but I can't honestly say that I know for certain. That's pretty much the definition of agnostic atheist. I personally find the agnostic part to go without saying, and so I simply identify myself as an atheist.
Others have mentioned the complete and utter lack of evidence to support the claims of god(s) existence (philosophical "evidence" doesn't count, as it is simply mental gymnastics in action), but beyond the lack of evidence... there is the complete and utter lack of reasons to believe. I have never been presented with a reason to believe that god(s) exist that wasn't a form of wishful thinking or that didn't require god to exist (e.g. 'If you don't believe, you'll go to hell'... only works if god is real).
Others have mentioned the complete and utter lack of evidence to support the claims of god(s) existence (philosophical "evidence" doesn't count, as it is simply mental gymnastics in action), but beyond the lack of evidence... there is the complete and utter lack of reasons to believe. I have never been presented with a reason to believe that god(s) exist that wasn't a form of wishful thinking or that didn't require god to exist (e.g. 'If you don't believe, you'll go to hell'... only works if god is real).
