by the age of 20 had a decent watch collection. was also the time i stopped wearing one.
the only reason you'd wear one is same reason you'd wear a gold necklace etc, just a bling thing has nothing to do with actually telling time. unless you're in a situation were it's not possible to carry a phone (army, underwater etc)
in other news, spotted 2nd audi RS5 in 2 days. o want.