RE: insurance:
It's a straight, hard line to self righteousness, and I hope to catch myself as often as possible when I start to become "that guy". I mean, it's pretty easy to sit around and talk about what other people should or shouldn't be doing. In the end, all we as individuals can effectively do- as Paul, I believe, suggested, is to lead by example.
I think the dilemma we all face is when is it right to force OUR PERSONAL values on others and when is it not. I know that we are not to bring in religion or politics into this, but how each of us view these subjects will affect our position on the "helmet" law.
I think people should make their own decision (I always ride with a helmet and so does my son and all of the friends that we ride with), and if a person's decision is to ride without one, and if it is proper for me to express my view to him/her kindly, I will. But each is ultimately responsible for his/her own decision - and the costs of that decision should be borne by them and not the rest of us.