Full disclosure: Former smoker
Why should they not? You would have been fine with it when you were a smoker. They are confined to designated areas.
I have every ounce of respect for non smokers. I always have done my utmost to be considerate at all time. What I do have an issue with are people who kicked the habit and now everyone else who hasn't followed suit is not good enough.
I predict this thread will be closed eventually so I'm jumping in with my 2c while the door is open. I just pray that I am never judgmental or critical of people who are still struggling with the same addiction that took me 22 years to overcome.
P.S. The smell of other people's smoke doesn't bug me at all