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 smoked for probably 20 years and I completely agree. Yall smokers stink! You can still smoke in bars in my state and you can smell that stank from the parking lot.