well, as long as its not in an argumentative tone... (and im just bored right now)
i definitely agree with you about organized religion. as for the existence of a deity, as far as im concerned, there is nobody directing what i do. if there were, why would i be saying this, right? now, there are religious teachings that i find no problem with - the ones that acknowledge that if there is a god, he doesnt really do much (basically deism). also, there is the matter of the "creation" of the universe. yes i suppose its possible that an eternal being created the universe... but where did it come from? how is it any less logical to claim that the universe is eternal like stephen hawking says?
when it comes down to it, i agree that we really dont know for certain. theres no good evidence either way for the existence or non-existence of a god. there is, however, good evidence against the god that is presented by major religions. of all the major religions, the only one i see as plausible is buddhism because it doesnt have a god.
no, i dont know "for sure". then again, you dont actually know anything for sure. for all we know, our senses are all wrong. nothing has ever really convinced me of the existence of a god, and the chances seem pretty slim of the most complicated solution being the correct solution (occams razor), so i do not concern myself with these things unless im bored late at night on a message board.
and i guess, from that and my other posts, you can pick out my definition of "atheist", which i think differs slightly from yours in that im not firmly grounded in a closed-minded environment. but i wouldnt call myself agnostic because i feel that there is no god that matches any definition of a god that i have ever heard.