Apologies if this has been covered before, but hell, you try to do a search for “atheist” in GD and sort through the results! It could take decades.
To me, an atheist is almost, but not quite, as bullheaded in declaring that they KNOW there isn’t a god, as a theist is in declaring that not only do they know there’s a god, but that they know what he wants us to do. (Having said that, I’m far more comfortable in the presence of atheists. None of them have ever tried to show me the light [or lack thereof]).
Perhaps science can disprove a few of the world religions, but it doesn’t rule out the existance of a god that lies outside the realms of religion.
Also, could I call myself an atheist if I suspected that god didn’t exist, but wasn’t positive? Wouldn’t that make me agnostic by definition? Are ANY of you atheists out there 100% positive that there is no god? I suppose the same could apply to theists as well. If you really think about it, wouldn’t the only people who aren’t agnostic be those who are so stubborn/stupid/deranged that they refuse to admit that there’s any possibility that they could be wrong?