Interesting observation Slowpokeman. I was listening to a local sports talk show hosted by a retired NBA player. He observed similar things ... He made the point that until he was a sophomore in HS he never participated in any organized sports, no clinics, no nothing. On Saturday morning, he ate a bowl of cereal and headed over to the neighborhood vacant lot with his bat and glove and played till the sun went down. He said that he would have hated going to practice, clinics and camps ... and his mom and dad would have never taken him to all of that in the first place.
I run by these fabulous soccer fields, baseball fields, playgrounds, and they all look like ghost towns - with the exception of organized yadda, yadda - then there are 3000 - 5000 kids and adults watching practice.
Running doesn't fit as well into the Gen Y mindset, which is one of having life hyper-organized by adults and also one of cooperative learning and "teams." Gen Y is just much better suited to team sports like soccer.