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 you’re underestimating how bad it was when everyone was smoking everywhere.
Or you never lived in city with polluted air. Headaches, memory impairment, bad sleep, cant go outside, get a fresh breathe, no sunshine touching your skin all lead to depression