Some guys look better with a beard, some guys don’t. A lot of guys who are bald on top like having beards. A lot of guys don’t like shaving. My wife would like me to have one, but only if I “groomed” it. I don’t have the time to figure it out. I tried it once, found it uncomfortable, and continue clean-shaven.
Some men who have small/weak chins grow a beard to cover that...