I'm sure there are some things smoking is blamed for it has nothing to do with. But, like the case of the bratty kid, all the bad stuff yet to be discovered more than outweighs any present injustice.
Think about it. Add more than a decade to your life by not smoking. That's a lot of birthdays, school plays, soccer games, marriages, and births.
All lethal addictions produce huge amounts of personal dishonesty to relieve the cognitive dissonance, plus the usual foxhole humor to deal with untimely and ugly deaths. Except that this foxhole is one you can step out of at anytime, which makes the humor just part of the usual junkie dishonesty.
I don't think smokers are "abused". I think they, like all junkies, tend to abuse everyone around them, including -- no, especially -- the ones they love the most.
And no, I am not an ex-smoker. And, FWIW, I do not think that much of the present movement to ban smoking on private property is legal or moral.
You're dislike of smoking bans does nothing in the way of mitigating your holier than thou attitude towards smokers.