I see a lot of guys in the movies, magazine ads and on TV wearing "wife-beater" or thin rib knit athletic undershirts like the ones my father wore. Does anyone in real life still wear these things? If so--what is the rationale? They don't protect your underarms from sweat or antiperspirant stains. If you are wearing a thin white shirt--especially in higher thread count broadcloth or poplin--they show unattractively through. I, and virtually everyone I've ever seen at the gym changing, wears either crew or V-neck tee shirts...if they wear undershirts. The tissue thin athletic cut flatters few when worn alone or under a shirt. So what--pray tell, is their purpose? If they are your thing, no offense intended, just enlighten me please.