Just out of curiosity, do you also think its totally fine to treat fat people negatively? Ugh. The amount of vitriol in this whole comment section towards smokers is disturbing. Almost every smoker I know picked up the habit in their early teens. A habit which is extremely addicting, and very hard to kick, more so the longer you've been doing it. Being shitty to them certainly wont help.
At the macro level first they were shuffled out doors, which was fine but sucks when the weather is poor. Then it was no smoking in bars, in your own home, within 50 meters of a door (good luck in a packed in city). Then it was "we don't hire smokers, even ones who don't smoke while they are at work". Then it was oh you switched to vaping because it doesn't smell as bad, has a much lower health risk but we're even going to be shitty to you for trying that.
Maybe, just maybe we should try to remember that these folks are PEOPLE and still deserve to be treated with a modicum of decency, the same as we do for the poor, the overweight, members of the opposite sex, those of different gender identities and sexual preferences and so on and so forth. Or would you prefer everyone go back to being shitty to anyone else who wasn't a carbon copy of themselves?