Nope, not agoraphobic
I just hate crowds. I can't handle the energy. It assaults me. I am sensitive to the energy of other people and pick up feelings from people I'm near. I've even been known to pick them up during IM conversations. It's very uncomfortable for me so I stay away from crowds.
I'm both an introvert and an extrovert. I have a tendency to show off but then I withdraw to myself and lick wounds which are not necessarily justified. I may feel wounded but the other party didn't intend it that way. My feelings are rather sensitive although on-line I've grown a bit thicker hide.
IOW, I'm a complex person.