I was looking over the poll results above and found the last one intriguing. Just to be facetious, I wonder what 18% of 500 voters would consider conditions serious enough to warrant application of a helmet. Hailstorms? Are some of them fearful of falling jet engines? I could see the need to wear one if they often spin past airports. Don't think the helmet would do much good though... but okay. Or having a fear of falling hammers, so they stop and don the helmet before riding past construction site scaffolding. Better hope no one drops a sledgehammer.

I was once riding by an electric company worker up on the pole and jokingly yelled up to him, 'Hey, don't drop anything!' To which he promptly countered, 'What are you worried about? You have a helmet on.' Hah! Touche, electricity man!