I think we are really playing with words here. You are absolutely sure God does not exist, but I cannot make the required leap of faith that being a true atheist implies and, thus, I can only call myself agnostic. Still, I am pretty sure He (or She, or It) doesn't exist.
As you well pointed out, I am not absolutely sure of anything that cannot be proved with a sound mathematical demonstration. That's about all the faith I have.
And I place it _very_ carefully ;-)
I used to think that it is just as arrogant to be an atheist as it is to be religious. Both sides have no proof. I considered myself to be agnostic as all we can confidently say is that "we don't know".
But I changed my label on reading jmc's words.
[edit: on reading other parts of this discussion, I see that jmc has already been quoted. However I'll let this post be, as it is still a reply to the parent.]
The JMC God exists outside our space-time continuum, since before the Universe and is said to have caused its formation and to interact with it in some way or the other, sometimes violating causality. Good luck trying to shape that into a testable hypothesis ;-) I won't bother with it until someone cooks up a decent one.
So, as only a true agnostic can say, I don't care if God exists or not. It's not a question I can answer.
Great thought provoking reply.
Personally, I don't have trouble concluding that the God theories of current religions are wrong (looking at the contradictions, absurd stories, in-built benefits for preacher class etc). Could there be some other non-religious God? "I don't care" is a good approach.
JMC = 'John McCarthy' as well as 'Jewish-Muslim-Christian' (all Abrahamic religions)? Whoa! My brain explodes!!! :-)
I'm playing a different game with pi. Produced by the brain as a shorthand or discovered within the fabric of the universe? Number theory, to me, is either a grand unveiling or just another language.