Rule #1 = Helmet laws suck, ex-Marine, in me, says freedom of choice!
Rule #2 = If I have to wear one ( :WASHINGTONhas helmet law), it has to be DOT. I was wearing a "novelty" helmet when truck switched lanes into me, knocking me off my Intruder, and when my head hit the pavement, fake helmet broke and a piece of it cut my head open, requiring twentythree stitches to close. (Also broke wrist).
Needless to say, I wear a helmet most of the time, now and I would rather wear none than put something on it that could cause more injury than protection. :x