Why even bother with that? Judging from jericsinger comment, if it is so precise, why not just create a pill or something? Why bother with exposing yourself to

Why even bother with that? Judging from jericsinger comment, if it is so precise, why not just create a pill or something? Why bother with exposing yourself to breathing problems or lung cancer. And with smoking being banned in more and more places, it can't be easy to administer.