the helmet debate, we gear up from top to bottom when we ride, It's just that simple. If you believe that your skull alone serves as the perfect piece of protective gear, it's hard to argue with that logic. Sorta like using a toaster in the bathtub; some peeps simply think that's a grand idea. Have fun with that one. Anyway, no grandstanding here, just a couple of articles to read and ponder. Michigan recently repealed it's mandatory helmet law and - surprise, surprise - injuries and deaths have gone up.
https://www.sciencebasedmedicine.org/the-cost-of-repealing-mandatory-motorcycle-helmet-laws/
http://www.foxnews.com/health/2016/01/08/injuries-soar-after-michigan-stops-requiring-motorcycle-helmets.html