Tbh I seriously don't have a problem with smokers.
I pretty much grown up with smokers in my life (uncles) and I've accepted that it happens.
It just infuriates me when people decide to smoke in inappropriate areas, such as around little kids or pregnant women.
Smoke and do whatever you want but if you know it's going to affect other people in a negative way, I suggest you do it where only you can be hurt.
Passive smoking is one of the worst methods of smoking and for it to affect innocent people is just plain cruel.