One reason to grow a beard is to attract the opposite sex. In Charles Darwin’s The Descent of Man, he hypothesizes that the process of sexual selection may have led to beards. Modern biologists also reaffirm that sexual selection has played a role in the evolution of beards. Many agree that potential mates found bearded males to be more attractive.
Evolutionary psychology explanations for the existence of beards include signaling sexual maturity and signaling dominance by increasing perceived size of jaws, and clean-shaved faces are rated less dominant than bearded.
What we learned to day: grow a beard and attract pussy. Video evidence below proves pussies like bearded animals better. And yes, bearded men- we are animals.