Inept? Really?
Well, I couldnt use ignorant - ie, simply doesn't know common courtesy and respect, because he does.
So after the careful deliberation of which precise weapon of mass vocabulary to deploy, I selected "Inept."
Inept: adj. Displaying a lack of judgment, sense, or reason; foolish
He's a smart guy, just lack of reason.
I don't have to zip my fly. It just makes me inept to do so, and the people that think im disrespectful for doing so are correct- no matter how much I want to pretend like its their problem.