hahahaha, oh man, this is funny stuff. Not your situation or anything just all the women and bashing and stuff, oh man hahaha. to funny. My advice would be first off, you know women, don't say somthing like that, not only is it gonna create bias among other people who read the message but your only gonna get pissed off replies.
As for your situation, if I were you, I would load up my possesions and make a plan, but then talk to her just before you plan to leave. Tell her you wanna move on and unless she's gonna cut you or somthing, you've got nothing to lose except leaving her in a little more of a gentle way. I mean, i don't think you wanna intentionally hurt somone that bad do you? I'm pretty sure you wouldn't want to feel like the way you feel right now ever again in your life, so imagine if somone intentionally made you feel that way? Just tell her and try to help her understand taht your not compatible and, to put it bluntly, your a mooch.