I enjoy the involvement of a MT more than performance concerns honestly. I think a MT MAKES you pay more attention, and I think that constant involvement makes you a better driver, more in tune with your car, etc. etc.
And, honestly, just going through the motion is enough for me. Love MT's.
If you CAN drive stick but don't want to, one thing. If you can't drive stick and act like theres no point. Thats another.