It is stupid. Looking cool can achieve nothing. Oscar Wilde once said that it is only superficial people who do not judge by appearances. However the two most notable things about Oscar Wilde are that he was gay and is dead. Even if they did, if anyone would decide whether or not to be my friend judged on what I was wearing, then frankly they are not the sort of person I want to be friends with anyway.
Some fashions also inflict pain.
Not a single one. One thing which isn't incredibly relevant here, but I will include anyway, is this. When males grow long hair and get their ears pierced in order to look cool and impress people, the underlying logic is absurd. If it is nice, get it. Wear stuff because it is nice, not because it is cool.