[eno_]

...or used hairspray, spraypaint, dozens of different solvents, rug cleaner...

Gee, maybe it's the addict, not the drug, that causes social problems. Making the trade in some drugs illegal contraband is nothing but a self-inflicted wound.

[headsonpikes]

...nothing but a self-inflicted wound.

In medicine, they call this an iatrogenic illness - one caused by the treatment itself.