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.
You’re right, we should disband all laws. Wouldn’t want to step on the toes of people who like to rape and murder for their hobby.