Illegal drugs, rape, murder and other abominations shouls stop for most humans at the ability to tell the difference between right and wrong.
If you put your whole family on illegal drugs I could only imagine the mess you would have in short order in your family.
If you don't use you can't lose.
Rape, murder and doubtless "other abominations" all have a common feature -- they violate the rights of an innocent other. Drugs have no such aspect. They are inanimate objects.