I agree. It is my experience that less than 1% obtain a black belt and the vast majority of those individuals don't like to fight and are, in fact, some of the most peaceful people I know. The experience humbles an individual as well. There is always somebody stronger, bigger and faster. Very few continue on to teach or share. It is this training where I learned the most. My students taught me more than my instructor. Kudos to your sons! I loved teaching kids. They are the best teachers!