Can somebody explain bicycle helmets to me?
I come from the motorsports world, where helmets are taken very seriously. They cover the entire head, including the face. Between the shape and the substantial strap, they're nearly impossible to knock off your head. In contrast, bike helmets leave uncovered the sides of the head, the face, and the back. They seem to offer protection only to the top of the head. And they're perched on the top of the head, strapped on by teeny little straps, so they're easy to knock off. All in all, they seem to be of little use.