This has been reported previously Einherjar, and if memory serves me correctly it is actually a bug, and their absence is not intended. Similarly, several of the females hairstyles never appeared on NPCs either. Here is the original thread if yourself or anyone else would like a read.
As a full bearded male myself, I strongly support calls to start having male NPCs spawn in with beards! As I said last time in the old thread, poor Jack Passion would be beside himself if he saw this.