My buddy and I rode last night, and we encountered three guys coming the other way. None of them were wearing helmets. What is up with that? I know there is no law forcing them to wear one, but while mountain biking, I don't see why anyone wouldn't wear one.
Sure it's hot here, but with new designs with more vents, they're cooler than ever.
Do you NOT wear a helmet when you're off-road? If so, why?