I was fortunate enough to break into the L.A. goth scene courtesy of the woman I now call my wife. When I met her, she was into the goth thing and I had my own fair share of black goth/club clothing. We would attend a nightclub VERY popular with the L.A. goth folks and got to meet a goth celebrity: "Angel". Not the TV show. He's a guy who actually has groupies and was in "Queen of the Damned". He wore kilts and wasn't the only one. It was fairly common.

In my opinion of the goth culture, it seems to be a peaceful, yet blatantly over-the-top rejection of the pastel Christian America portrayed by people like George W. Bush. It is a form of rebellion, usually against parents. They can be "dark" and "mysterious" and have "normal" people question their values while knowing within that they are not doing anything bad. Unfortunately, it can occasionally lead to much worse like drugs and self-mutilation.

Goths seem to wear kilts because it is a rejection of modern roles. Dad will ask why they are wearing a black leather skirt (but still thankful it isn't a mini) and Mom will wonder where she went wrong with her baby. But the kid can go have a good time.