I'm not sure I could have survived to adulthood had not my dad, granddad, uncles, and various other grown-up men (and a few women) encouraged me to finish my supper with "Eat it! It will put hair on your chest!" The subtext was always this: The amount of hair on one's chest and (by extension) everywhere else on one's body it might grow, has a direct relationship to the amount of manhood. And being a man, by the way, was always a good thing.
Now this: All along, Gillette tells us, women have wanted hairless men. That's what they really want.
Just another reason, I suppose, why people should keep their clothes on until after they marry.