Speaking as a man with no hair now – it’s very freeing. It is physically cool, it is less bullshit to deal with. No waking up & being like, ooo, gotta work with my fucking hair. Others are saying it’s autonomy & control, probably not wrong, but it’s also just plain smart. Practical.
Also a defensive strategy. If the hair is kept short, people can’t grab you by the hair & force your head around. Yank your head back & slit your throat.