You're right that this is a stupidity issue that noone enforces, and I wear my helmut during every bike ride. I have in fact though, made the stupid mistake of riding my dirt bike without a helmut and should thank my lucky stars that I haven't ate it yet. The reason I haven't been using a helmut on my motorbike is cuz I can't seem to find it amidst all the stuff we moved out of the house to do remodeling. Yes I know it's a stupid reason and wish I could kick myself for doing it. PUUUUUUUULEASE do let people know of the helmut law because I can think of more than one occasion when a helmut has protected my from head injury (though they wouldn't have been much of nothing, but no injury is better than even a small one).