There are so many examples of imposing one's will on others, that it is just human nature.The vast majority of head injuries are sustained by people in cars and on foot - why is there no discussion on the merits of of wearing helmets in these conditions? If the aim is to save life that is where to start for maximum life saving. But it isn't about that, is it? it's about imposing one's will on others.
People in power do it.
Large groups of people do it, by persuading the people in power.
Small groups of people do it, by terrorising people in power.
Individuals have no voice unless they pick option 2 or 3.
Personally I sometimes wear a helmet, sometimes I don't and I don't care what others think unless they try to force me to wear a helmet. I like to make my own risk assessment, most of the time I get it right, sometimes wrong, who cares ?