Because if there's anything that Prohibition and the war on drugs has taught us is that this proposed law will not backfire spectacularly.
And
at anyone using the "but my tax money will be funding healthcare for people who get sick from cigarettes, so ban them!" argument. I guess you'd be onboard with a wholesale ban on junk food, dangerous sports, plastic surgery, and a host of other unnecessary things that carry a high risk of harm? You're funding your own healthcare as much as everyone else's, so stop using that as justification for controlling other people's choices. It's the same bull**** argument that's been used to death against Obamacare.
you can't argue that banning cigarettes for people born after a certain year isn't a "nanny state" policy.