Here in NH there is no helmet law. Free choice is the way it should be everywhere. A friend of mine works in an OR setting, she calls every helmet-less motorcycle rider "organ donor".
It's ironic to see someone on a motorcycle wearing almost nothing for clothing, with a helmet on their heads. Short shorts, flip flops, halter tops for the girl on the back of the bike; bare chested men/driver with cut off blue jean shorts and a pair of sneakers, etc.
I spent over a decade in EMS service and I've always thought that if they are going to pass helmet laws, they should also pass leather laws.