Here's what I don't get about agnosticism:

If you are having a conversation with someone and they asked you what you thought of the Flying Spaghetti monster, would you really say "I'm sorry, but due to the fact that the Flying Spaghetti Monster is not subject to our causal laws and such, I cannot ascertain whether or not His Noodliness exists"? I think the most rational answer there would be "No".

Or how about (for some of the more conservative people): If someone asked you if you were actually a woman trapped in a mans body would you really say "I'm not sure, I can't prove it one way or another, it is a definite possibility"? Even if you said that would you really be thinking that?