Earlier quoted context omitted.
Time to read up on how NZ implemented it. Already smoke, even if incidentally? You're 100% unaffected, you can still buy them until you die from old age. Too young? Cool, you're never going to get ciggies sold to you, and you're not going to miss suddenly no longer have access to them because you never did anyway. No one loses. It's a very long term solution, and one that (the current forms of) the US or Europe could…
That is missing the point of letting people make their own choices.
That said, the economic costs of smoking to society is significant and there are some corporations that essentially make a killing on it (don't get me started on the anti-science propaganda that they funded. If people want to smoke tobacco in their own home, sure let them grow their own, so at least there is not a corporation who tries to peddle smoking to children in order to improve their profits.