To me there has always been a clear connection between facial hair and Naturalism. My theory is that throughout recorded history, men grow beards to defy the fact that they could shave it off with a razor and look more feminine; usually to rebel against the social norms of shaving and assert their manhood and / or be more in tune with Nature.
There is a reason that barbarians that lived wild with nature had facial hair and industrious Romans did not; and there is a reason that when ancient Rome became more intertwined with barbarian cultures, that it became popular in Rome to wear beards! The more industrial a society or culture, the more they will want uniformity for the wearing of helmets (chin straps and gas-masks), stream-lined mechanical safety, and uniform equality for those that cannot grow facial hair thickly or completely (like boys, women, and some men).
Facial hair, like other hair, is considered by many of us Pagans to be a spiritual connection with Nature and the Gods and Goddesses of Nature and Nurturing. Consider that after many terrible industrial wars it has been popular for veterans to grow beards. Famous Naturalists like John Muir, H.D. Thoreau, Walt Whitman, and even Emerson (in old age) all had beards for obvious anti-industrial reasons.
Even those that grow a beard because they are ‘too lazy to shave’ are more harmonious with Nature by allowing their beard to grow, and not artificially shaving it off. Also there are many religious, spiritual, philosophical, and personal reasons for having beards. So before you judge people based on ‘un-fashionable trends’ that you perceive, consider that it may be more or less significant to the person with more hair.