The big downside to shaving your head is that sweat pours right off instead of being sponged up by your hair. As such, you need something on your crown when in heated environments (you know, that kitchen place). It can be a baseball cap, a skull cap, or a “do rag”, but you need a sweat catcher.
Also, a warning for those who’ve never done it. No matter how little hair you have, your scalp isn’t as tan as the rest of your head. It only takes a few days to fill in enough, but that first shock is a big one.
I’m a part time baldie… I shave my head when it gets long enough to have to brush or comb. By then, it’s back to bright white.