Skilled trade shortage

I'm not sure what specific jobs go wanting. I have some friends who, even with college degrees, have gone the skilled trade route to become electricians, specialty metal workers, etc. They seem to make a decent living, are happy and have plenty to do. As I understand it, these begin with apprenticeships and climb their own ladder as far as title goes. I'm not sure where people come from with these sort of desires. In the past I think it was sons following their fathers. The military also offered plenty of training that could transfer to civilian skilled positions. Trade jobs just don't have the glamor of some others. And they aren't "chick magnets" either, I suppose. But just how important is that. Happy