I started in 1981 at age 10 as a "fun" activity to do with my dad. I "enjoyed" it so much I quit after getting 9th gup! Those were still the days when kids were taught the exact same way adults were and there were no separate kids classes. I went back in 1986 mostly because a friend of mine was doing Judo and I thought to myself, "If he can do Judo I can certainly do Taekwon-Do." Still the same training regime for teens and kids as adults at my instructors' school, still the same having you dobok drenched in sweat at the end of the night. I'm still training. Just promoted to VII dan last April. I'm not sure if it would be too dumb to quit now or if I am too dumb to quit (if you see the difference!).