My uncle got hit by a car, the only thing that stopped him from dying was his helmet. Which is why I always wear one, despite the fact no one else does.
Yeah, it's tough because my wife is the one always harping on him to wear a helmet for everything. I never did and there was only one time that a helmet would have helped me and I was doing something really stupid (holding on to a motorcycle while riding my skateboard). It's so different now as a parent.