"It's the last bastion of political incorrectness," says Spencer Kobren, the LA-based host of the Bald Truth, a radio show aimed at men losing their hair. "You're not going to go up to a chick and be like, 'Hey, do you know what, it looks like your *** has got bigger!' But that same girl can go up to a guy and say, 'Hey it looks like you're losing your hair,' and it's considered OK."
Even if most of us aren't so crass as to do that, the prejudice is deeply ingrained. Studies consistently show that women are more attracted to men with hair. Note also our aversion to hairless presidents—Eisenhower is the only bald man to be elected to the Oval Office in modern times—or the way Wisconsin governor Scott Walker's bald patch recently became an actual issue in his bid for the Republican nomination.