That's simple. Growing facial hair isn't cool, it's facial hair itself that's cool.
Someone with a big walrusy Wilford Brimly moustache is cooler than someone who's working on growing a moustache.

[–] [email protected] 5 points 2 days ago* (last edited 2 days ago)

Well groomed, long hair, like well-maintained, thick, stretched earlobes, communicate patience and the ability to finesse your way through difficult, potentially uncomfortable situations in service of a larger, long term goal. Unfortunately, you can be very patient at becoming an asshole as well as becoming a decent, well rounded person. Facial hair doesn't make you cool. Being a cool person makes you cool.