Opinions on public smoking?

I hate the group of people standing right at the front doors a building, smoking there because they can’t do it inside. I hate the people that throw their cigarettes out the car window when they are done with their smoke. Part of me says hey they are killing themselves why should I care, but on the other hand it makes me mad that some people I work with smoke, and get sick much more often than me, but yet we pay the same amount for healthcare. Is that fair?