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.
Get granny some nicotine pouches. She probably doesn’t want to smell like cigarettes either. In the same way you can get your THC without making your whole area smell like brocolli-diarrhea by using gummies and the like, the world would appreciate you finding other ways to ingest your drugs than to stink up the space we all have to share.