Oh believe me, I am a staunch advocate of minimal government intrusion in our lives. We get too much of it already and don't need more (listening Mr. Obama?). Even though I am a 20+ year MSF instructor, I am not a proponent of mandatory helmet laws. But to me its more than government instrusion, its more about the government using a mandatory helmet law as a placating band-aid to avoid the real issues of rider training and way too easy licensing standards.
The saying, "you can't fix stupid" applies, and no amount of government intervention will ever change that.