I am smoking weed since I am 15 still alive and I am working(also paying taxes) and an active member of society. Drug abuse as you call it is not abuse. Of course kids should not smoke shisha but I dont think that it will destroy their lives.
Bad parenting destroys lives!
When my father caught me smoking weed he tasted it and said I should change my dealer :) Thats good parenting.
Sorry I dont wann step on your toes but we cant see the things in black and white unless it is a BnW photograph...