I like lots of others have rode my bike without a helmet when I was younger.I'm now 55 and consider myself to be not lacking in common sense therefore I wear a helmet when I ride now.I ride pretty often out on the streets of the villages & let me say with the way we all drive around here a helmet may not be enough protection(maybe a suit of armor is in order) I wouldn't ever consider hopping on my bike without wearing one.Please don't say I should be riding on the multimodal paths. I fear more for my life there than out in the road!!