Me too.
A theory I came up with recently, while pootling along the backlanes of Norfolk with my daughter (like me, helmetless) and a friend and his daughter (like him, helmeted), in line with the research showing pretty conclusively that drivers are more careful around/considerate toward riders without helmets: when a driver sees a helmetless cyclist, (s)he subconsciously thinks: that's a person - one of Us - I must behave accordingly; when they see a helmeted cyclist, they subconsciously think: that's a bleedin' cyclist - one of Them - and behave differently. A helmet, in short, turns Us into Us & Them. As so often, a recipe for grief...