Motorcycles

From what I've seen, Florida is pretty squiddy. They have the same kind of flip flops and t shirt sort of thing going on as Hawaii, probably for the same reason -- people think they're in the "tropics" so it's hot and therefore they "can't" wear protective gear. I'm certain copious amounts of alcohol consumption are often a factor as well.

Southeast Asia is much the same. A lot of people are seen wearing helmets there, probably because it's compulsory in a lot of places, but other than that they treat protective gear and closed toe shoes as something that happen to other cultures.