Being a kid myself (18) and active in SCCA, I have many friends who have "tricked out" honda's who like to drag race. Not one of them likes road racing or Autox. It takes to much work for them or so they say. I think their big bore exhauste had messed up their minds perosonally.

I also have noticed that if a younger person is going to join they either (A) really really like road racing and have money/or do it with parent(S) like me, Or ("grew-up" in the club. outside of that it's old the older folks. Sure I meet kids and my racing comes up, and the typical responces is," oh cool, so anyways..."
I hope that was useful, for what it's worth
Take care,
Chris