It seems to me that training in tae kwon-do is hardly very advantageous to defending oneself. I am only a 1st Dan in Karate and have decided to train in a second martial art, when training there is little or no contact in sparring, I always said if you keep kicking the air you will get very good at kicking air and nothing else. The kicking tecniques are slow and easy to counter, finally when your compete in protective wear you dont respect the punishment you recieve, ie if you werent wearing protection you would not be so willing to do those risky techniques.