Ah, and there's the Law of Unintended Consequences. There is a nearly perfect inverse correlation between cutting the percentage of smokers and the increasing rate of obesity. It's pretty much a toss up as to which costs society more in terms of health care costs.
I certainly don't drive more recklessly using seat belts and, having raced sports cars in Marlboro, MD as a teenage girl, I'd not get behind the wheel without one. Helmets? No. If I drove more long distance I'd install a Bondurant five-point belt in the driver's seat.
Back in the day, I too raced my bicycle at high speed with no protective head gear. I drove a 1942 Harley without a helmet. What next? Helmets required in the shower?