[StrictConstructionist]

Leave people alone! Let us decide what we do and do not want to eat, drink, smoke, or otherwise use!

[Mariner]

Nobody presumes to tell you how much salt to eat.

[Drago]

...Let us decide what we do and do not want to eat, drink, smoke, or otherwise use!
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We could do that, but you would have to do away with socialized medicine, Medicaid, Medicare, etc.. Almost 70% of healthcare costs are paid by the government now and they need to keep their costs down...same reason for things like helmet laws, seatbelt laws, expensive/mandated car "safety features", etc., etc..