I have mixed feelings. I do not smoke myself, and except for a cigarette I had to put in my mouth for an act and a cigar I used primarily to light fireworks I never smoked at all, and I prefer people who visit me to do their smoking on my balcony, and every smoker accepted that so far.
The anti-smoke lobby fears me, as I am afraid that after smoking it will be alcohol that will get an anti-lobby, and after that fat and sugar and then... well you get the picture, and I wonder what will be left. Furthermore we can see how drugs are getting more and more of a problem, and I wonder what the problem with drugs is... that stuff itself or it being illegal. Criminals go to great lengths to get their drugs sold and take great risks and become very extremely violent. And especially countries were drugs hold the death penalty those criminals are fierce (and that is BECAUSE of the chance for death row, not the other way around). Tobacco can easily become the new cocaine in that perspective.People getting shot dead because of some cigarettes sounds silly, but be honest, people getting shot dead because over a package of cocaine is not really normal either, is it.
At the same time, we cannot ignore the negative effects of smoking and even more, the damage it does to others. Being in a group of smokers and not smoking yourself damages your health as well. Not to mention people suffering from lung diseases who cannot always get out of the smoke of smokers. Not to mention I have been on birthday parties with smokers and my clothes were really stinking after those. And of course, accidental arson is possible with just a burning cigarette/cigar leftover, especially with area getting drying and drying now that the climate is changing and the world getting a bit hotter (this is likely what happened in Australia), but in some forests that danger is already there without climate change (I remember the warning sings I saw as a kid).
So I guess for both banning and not banning there are good reasons, and I think it's hard to make a good choice between the two.