It smells terribly, exposes others to negative health effects without consent and is one of the biggest causes of littering. Simply put it is a major nuisance with no benefits apart from profits for the tobacco/drug industry and addicts getting their high.
Could probably extend that to anywhere around minors in general too.
I think they want outdoors as well. Though that is assuming based mostly on how normal indoor smoking being banned already is.
Yes. Restaurants, bus stops, train stations, public parks etc.