I may or may not believe any of the following:
Traffic laws don't tell you what to do (obey speed limit). Rather, they tell you what you can't do (break the speed limit).
In other words, they tell you what you can't do on actions they know that you're likely to do anyway - this way they can make money on the transaction.
This is why speed limits are set where they are - not because it is unsafe to drive 75mph in 65mph zone - but because they know you won't obey it and they can make money on our lust for high speeds on open roads.
A state will go helmet-less only if there is are no idiots to bust (everyone wears a helmet on their own initiative), and therefore no money to be made.
