Although I often like to take the alternative view on issues like this, if only to spark discussion, I have to agree with all the posters here: the smoker is solely responsible for smoking. Tobacco companies create a legal product and market it, no different from fast food, or organic food, or Q-tips. Until the point when we say that tobacco is illegal, no one is forced to spend their money on them. We can cite all the harmful marketing that seeks to attract kids we want; stores are prohibited from selling to minors (but we all know that you can get anything you want these days) and it is the buyer's responsibility to purchase or not.
That said, we certainly need less smoking around. However, high taxes and laws are not the way to do it; if they were, well, we'd have solved the problem by now! Education about nicotine and smoke is the way to solve the problem.