I just got back from a week in Hawaii (Oahu & Kauai). While there I saw a lot of bikes being ridden, including sport bikes and cruisers.
Hawaii repealed their helmet law and probably the majority of the riders did not have a helmet on.
The one thing that was very odd that I did notice, nearly every sport bike I saw where the rider was not wearing a helmet, they usually had one strapped on the bike and ironically, most were more expensive helmets.
The other thing that made my skin crawl was that nearly all that I saw were wearing tank tops or t-shirts with a lot just wearing shorts.
I go over there nearly every month on business and have read about some very gruesome fatals over the past few years, you would think that people would learn.
About five years ago, I was the first on the scene of a crash wear a dude on a HARDLY took out a steel post for a handrail on a bridge, with his FACE......The guy actually lived but spent a year and a half in the hospital. He was wearing a Brain Bucket that was still strapped on, well kinda....
Here in Vegas during the summer when it is like living on the surface of the Friggen SUN, you see a lot of people strippin down when they ride. Can you imagine what it would be like to go skimming across hundred degree asphalt wearing a tank top?