Well this law does pertain to minors and therefore I think most if not all of the people responding on this thread would not be affected. I am not really for or against this. With Minors it's a tough call, as decision making isn't all that great. Of course it forces a burden on parents and so on. It can also be seen as a stepping stone and that's no bueno.
I think the law is probably more likely to cause the kids not to want to wear a helmet due to the whole rebellious nature of most kids. I know when I was a kid, half the time I just wanted to do shit simply because someone was telling me not to or vice versa.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz