As a biker, I know the importance of wearing a helmet! I know several cases of people dying or staying in pretty bad shape for not wearing a helmet!
People have to understand that's is for their own safety!
Answering the second part of your question, I think the law is only protecting the bikers themselves, they're the ones who should obligate their states to approve this laws!
In my country, portugal, it's mandatory to use a helmet while riding your bike!
The only exception: Faro's bike event, once a year, one of the biggest motard gathering in the world!
The importance of wearing a helmet gained another importance after Marco's Simoncelli accident and death... It shocked the racing world and I'm still thinking how was it possible for his helmet to get off that way...
And you, do you usually wear a helmet while riding your motorcylce?