Wearing a helmet is a personal choice that is made by the rider. It is one of the few safety devices that when not in use doesn't endanger other people. If you choose not to wear one that is solely your choice and your risk. I will not ride without one and I will not ride with someone that isn't wearing one. I don't feel that people who choose to ride without a helmet exhibit the same risk assessment skills as I do and do not want to be near them.