Look for the parks and rec programs to see about the taekwondo- we are able to do it for real cheap. Right now we workout in a park, and the instructor isn't charging at all.
Sports is just a game, but it is also a great teaching opportunity. Teamwork, dealing with failure, dealing with victory, perservering to overcome challenges- you can actually have a micro-cosom of life in the course of one game.
Of course most of the time it is all just an excuse to play in the mud, though!
I have a friend who has a black belt in taekwondo. He is good friends with a person who has a studio.
I agree that sports is a great teaching tool for adult life. My problem is when you have a family who is never home because each kid is on a different league. Mom and Dad split up on the weekends to ferry the kids to their different events. When do they have time to mow the lawn? Nevermind, they have Mexican gardeners and housekeepers.