I am a firm believer in the use of helmets.
My test of a Bell Star came in 1979 when a Mini of all cars turned in front of me while I was riding my Yamaha XS750 (triple). I tried to turn with him to lessen the impact, but still hit his fender, and then flew some 20-30ft down the sidewalk, making initial contact with my helmet and shoulder.
The result was a broken left arm, massive bruising down my left side, and no head injury. I examined the Bell Star which just looked to have a paint scuff on the side. I removed the liner and at the scruff mark the shell had been ground so thin it was like looking through translucent onion skin. I believe that helmet saved me from from serious head injury, if not my life.
The bike was turned into a ball of scrap metal.
Regards,
Savageduck
"The machine does not isolate man from the great problems of nature, but plunges him more deeply into them."
Antoine De Saint-Exupéry