I can grow a full hipster beard, but it comes in bushy and curly so I don't like it.
I've had a mustache and goatee for years. It's easy to maintain, and I get quite a few compliments on it.
If I'm clean shaven, I get carded for cigarette's...
I could grow a mustache at age 16 (but I looked like one of those 1970's porn stars), the beard/goatee came in too patchy until about age 25.
Since I'm on the shorter side and have a baby face, it's easy to look young and not get taken seriously. The goatee fixes that, as does a receding hairline. (never thought hair loss could be a blessing, but honestly it was)