They've missed the elephant in the room. From having once been a teenager I can say with confidence that peer pressure and general social expectations about wh

They've missed the elephant in the room. From having once been a teenager I can say with confidence that peer pressure and general social expectations about what is or is not normal to be doing on Fri/Sat nights is a huge factor (or at least it is in the north of England). Adults are doing it and so when you're in the 16-20 age range there's a lot of social pressure to "be a man", to be able to drink more pints than your friends, "build up your drinking stamina" and so on.