You know, I'm too much of a libertarian to believe that we should force anyone to wear a helmet. I think we should present the information and encourage all cyclists (and motorcyclists) to wear helmets but I'm against mandatory helmet laws (at least for those 18 years of age or older, I think there should be laws requiring children to wear safety gear) because I think people should have the right to make their own choices. It's just going to be their own heads which get smashed like a ripe watermelon on the pavement. That's why it never bothers me if other cyclists don't wear helmets, but I will always wear mine and encourage those I care about to wear them, too. And just about everyone I know wears them.