Can't say it enough. This happened recently near me. This poor 20-year-old dope has been in a coma for nearly a week, but had a high-probability of minor-injuries if he'd worn a helmet (and a probability of 1 if he'd stopped at the stop-sign). You can plainly see his head bounce on the asphalt. There is no helmet-law in Connecticut, and for some reason a large majority of riders seem to think it's a "No Helmet Law". I see guys ripping around here with their hair covered egg-shells flowing in the breeze. Dummies.