I consider myself agnostic, I think.
Most arguments for Atheism I hear poke holes in various Christian beliefs. These might be totally valid arguments against Jesus and such but do nothing to disprove the existence of a creator, one who is not necessarily the God of Abraham. Other, more generalized arguments I've come across propose various paradoxes of a higher being, like, "If God is all powerful, can he create a being more powerful than himself?".
The latter arguments I find to be incredibly silly, because basically, the creator of the universe wouldn't be bound by the rules of his own creation. I.E., if God exists, 1 + 1 = 2 because he fucking said so and for no other reason at all. His being and existence would be so far beyond our comprehension that it's entirely laughable to try and trap him with a game you learned in Philosophy 101.