Yep, this hobby is mostly comprised of older guys. Used to be that building model cars was very much a kid's hobby. Back in the late '50s and the '60s, many model kits were marketed specifically to kids. Remember all of the Tom Daniel kits, and the Deal's Wheels stuff, things like that? Obviously meant for kids, and kids were in fact the largest part of the hobby. Most of the adults in the hobby today are those kids from the '60s, who either took a break for girls, marriage, kids, etc. and came back to the hobby many years later, or some who continued building straight through. The hobby just doesn't excite today's kids the way it did kids back in the '60s. Part of it may be the fact that today's kids have a much wider variety of things to do to keep themselves occupied... things that didn't exist in the '60s, like the internet, video games, social media, smart phones, etc. I'm not sure if the hobby is growing, overall... or shrinking. But one thing's for sure... it's aging.