If we know that smoking is bad for you and yet we allow it, what is the difference with anything else? Smokers, football players, boxers, mma, drunk drivers, drugs, race car drivers, cliff diving, parasailing it can be/is all bad/dangerous for you and we know it yet we do it, at what point does it become the individuals responsibility not everyone else? Do we legislate everything to death and if not what is or isn't legislated?
Insurability.