Some of us make our living in the general population and a beard may be detrimental to one’s success.
It is not considered appropriate in the conservative courtrooms here in New England. In fact about a year ago I commented that when I first started practicing law, a senior judge took me aside and told me that only the Judge wears black in the courtroom. So I wear Midnight Blue or extremely dark grey suits.
I have found that the younger generation (under 45) can get away with a neatly trimmed beard and my eldest son does wear one in his practice. As for me, a beard will wit until I am fully retired.