Wasn't trying to say that you don't care for your son. I was using "care" in the definition sense of "Caution in avoiding harm or danger", not personal feelings. Sorry if it came across differently.
I can't prove beyond a shadow of a doubt that wearing a helmet will always protect a person and never do that person harm. That has been part of the age old arguement for wearing vs. not hasn't it? It's also true that you can't prove beyond a shadow of a doubt that NOT wearing a helmet is safer. I believe that in most cases though, having the helmet is better. I'll make my own choices for myself but I'm not willing to play against the odds with my kids.
I'll say this... regardless of my own choices in life, I would hope to ensure my child lives to make it to the point that they are capable of taking everything I've taught them and making their own choices for themselves. I do believe that them wearing helmets will help to achieve that goal.
I didn't take it personal. Although, if I did use your definition of 'caring' I wouldn't let him play sports, ride a skateboard, bicycle, or leave the house. He broke more bones during football than riding motorcycles. He is now 30, serving in the Army, and riding sport bikes, by the way.
I know people that were saved by a helmet, and I know people that were saved because they didn't (I am one of those). It's an argument that will never be settled since there is no way to actually prove it one way or the other, statistical evidence be damned. We are all just playing the odds in everything we do. if you want to stack the odds in your favor, so be it. How you stack those odds is the question.
My own theory is that when riding a motorcycle, the only thing a helmet does is allow for an open casket funeral. Riding a motorcycle can be dangerous, and often is considering the other drivers on the road. It takes a certain chutzpah to ride a bike. Fear can not be in that equation. Confidence and a keen awareness of everything around you is important. Even the best rider, though, can be killed in an instant by someone else doing something really stupid. That is also another fact you have to realize. Or you can just ride oblivious to the dangers and still enjoy the day.