And as it turns out the proponents of helmet wearing for bicycles are car companies. Bike helmets don't really do much to protect the front or sides of the face

And as it turns out the proponents of helmet wearing for bicycles are car companies. Bike helmets don't really do much to protect the front or sides of the face, only impacts directly to the top of the head. So people wearing helmets riding on bikes are mostly doing it for legal not safety reasons, regardless if they know it or not.