I would have to say that figure skating and gymnastics are more of an art than a sport, since you don't play defence and scoring is done by judges.
Not sure about figure skating, but a LOT of the "art" in gymnastics has gone out of the sport in recent years with the new changes in the Code of Points, which heavily reward skills and combinations of them. What used to be beautiful floor ex routines for girls are now very little but several tumbling passes.
The reason I now say that auto racing is a sport is that, Danica Mania aside, women almost never make it to the highest levels. Not that the corporate sponsors haven't tried. To me, that says that there must be more strength and endurance involved than appears on the surface.
Sounds like a Pac-10 football game.
Figure skaters get a lot more bruises and fractures than artists. It's a sport.
Don't knock it if you can't do it. For the record, I can't stand figure skates but I've been around enough rinks to respect what they do.