Snap out of it man! If younger golfers want to play they need to adapt to the traditions of the game. Sure youngsters can play when they want, but being a tour pro requires certain decorum.
Look at it this way. Baseball guys have to wear the uniform. Same wih all other sports. And they play in the elements just like golfers. Guys who race NASCAR wear firesuits in cars at 140*, and while I'm sure they'd like to wearshorts, it's a no go. Yeah I know, golf isn't NASCAR. But there is the leagacy of the sport, any sport.
At least guys don't have to wear wool and ties and vests any more (unless you're Ryan Palmer). Seriously, it's fine to entice the young guys, but long pants are the uniform of the tour, any tour.