I don't really agree. My position isn't that I know there isn't a God, it's that I don't accept the existence of anything that I have nothing to compel me to believe exists. In other words, I'll believe in God just as soon as evidence is presented that suggests his existence is more probable than his lack of existence.
I don't see that as having any sort of faith, I see it as a wait and see position.
Why not call it agnosticism, then? Because I don't entertain the possibility of the existence of anything and everything that I can't disprove exists. I assume on the one had that things do exists that I am unaware of but also that I cannot ascribe specific qualities to these things until I can observe them. So the notion that God exists and that we know what he wants from us is, no offense intended, ridiculous to me.
There is a lot of having your cake and eating it too in the religious community. The argument that because we don't have all the answers through science, the great majesty, mystery and unknowns in the Universe MUST, MUST be the result of a God of some sort is contradicted by the fact that those same religious people know who this God is, what he has done and what he commands us to do with out lives in specific and sometimes silly ways.
So is it that this God is unknown and that's why we can't really be Atheists, or because there is scripture that tells us all the answers and that the validity of those answers and of the wisdom contained within is proof that a God of a specific and known character exists?