That's probably true of most people right now but I'm sure this isn't an innate part of biological reality for humans, eg different cultures at different times will surely have different ideas about attractive hairstyles or lackthereof.

I find it hard to believe a bald/balding guy in the Soviet Union at the height of Lenin's cult of personality wouldn't benefit at least partially from that.

Also this is a weird artifact of Russian culture if anyone cares: https://secure.wikimedia.org/wikipedia/en/wiki/Bald–hairy