Some people might say that about SUVs. Others might say that about burning fossil fuels. The point is, we shouldn't just try to get things like these banned just because we (specific "we", not general) cannot see the value in it.
Huh? SUVs have value - they transport people and might come in handy for those living in some rural mountainous areas. As for burning fossil fuels, until we come with something better that the government is willing to get on board with, those are very valuable.
There is nothing valuable about smoking except to the addict that needs his next hit and if he didn’t take the first drag, he would not have been there in the first place. It’s a sad deal.
As for banning smoking, I don’t think people necessarily want it banned in the sense that nobody is allowed to smoke just that they want it banned from THEIR space.