My ds just turned 17,and refused to wear a helmet when he turned 16,our states legal age- I HATE IT but he won't budge. My dh,who does wear a helmet,just says he'd like to force it, but it just isn't a war we want to fight-And war it would be....
I want to,but the reality is son is very independent now, he rides his bike for hours every week-and the once or twice I considered banning it b/c of the helmet,he just hung out doing nothing,so I chose allowing him to decide this. I want him to wear one but realistically we never had to when I was younger....well,you know

We haven't stopped trying to convince him of the good reasons to wear one, but a lot of people bike in our town,and most of them aren't wearing helmets either....
The reality is, ds sits around doing nothing,or goes biking,and does his own errands happily. always wishing I could just force it,but life isn't always so simple.
In so many other ways,ds is such a good kid,and compliant with all our house rules,but this one thing seems to be such a huge deal for him right now