The other thing about shaving your head is there is nothing for anyone to grab if you get into a scrap with someone. Sad thing is, it can get a little cold up there.
Count me in with the guys who have more, thicker hair than they want. I'm the guy that uses a Flowbee and I love it. Very little gray on my head at 64...it's all in my beard. And, yeah...ear hair and eyebrows grow like weeds now. I keep it short, too.