martial arts, for the most part, won't do crap for you in a real fight, or when your being mugged. (martial arts as in, the stuff they seem to teach kids in mimi malls.) I took Tai Kon Do as a kid, and well, outside of making a few friends, the only thing i learn was how to take a punch.. (being a tall kid resulted in my sparing with the older kids in class, all of witch pretty much kicked me around.)
I won't consider it a total waste of my time, but, it's not going to come into play if i were to get attacked now a days. The best choice is to avoid the situation, or run like hell.
But if it boiled down to a nessissity, as in, fight or die, there is no running, I'd at least want SOME kind of idea or training in hand to hand combat. And if I had it to do all over again, as in, learning something as i kid, i'd prolly go with streight up Boxing. I think knowing how to throw a good punch and how TAKE a punch would be more effect for me and my build then fancy kicking. *shrug*
Heres hoping we never have to find out eh? LOL