I have a long face, and I'm an introvert, so I think a beard would make me look exaggeratedly solemn. I do joke and laugh some, so that would be a misrepresentation. Despite my avatar, I've had a mustache for a few years, not always neatly trimmed, but I was smoking a pipe years before the mustache. Had a mustache in the Navy, a big concession to military regs, allowed because the Vietnam War collided with the Beatles generation and the lower enlisted ranks couldn't stand being bare faced. Same way I was able to change job assignments (and rating patches on my uniform) which has long been anathema in the military. If they say you are a cook, and you have an advanced degree, you cook, or that has always been the tradition.