The truth is out, and your suspicious are confirmed. Science has confirmed that the bearded men are more likely to be bad boys, using their facial hair as a mask of hostile masculinity. Even during Movember, beards make men more likely to be awful (and not just because they're full of poop).

An Australian study surveyed "500 men aged between 18 and 72 from India and the US," and "studied men with nine facial hairstyles varying in length - from light stubble to a heavy beard." The subjects first identified their amount of facial hair, and then answered a variety of questions about gender roles.

Beware of the beard.

In the study, men with beards were more likely to express a hostile sexism, which for the study meant openly negative beliefs about women. "Benevolent sexism," a wee bit of an oxymoron, meant dudes who had positive, but still damaging generalizations about women. 

Archives of Sexual Behavior
Sources: Daily Mail | Psychology Today