Most Opioid addicts aren't people who took them for minor surgery and got hooked---they are people who buy them on the street, crush them and smoke them.
I have a pharmacist friend and the problem was states like Florida where there were "pain clinics" where a person could get an "examination" by a "doctor" and get the max prescription with max refills, because "Doc I am in pain."
People would drive down from across the eastern third of the nation. with six people in a van, and all get the max dose at as many places as possibly, then drive home and sell them for huge profits.
A lot of them were kids who stole the drugs their parents were prescribed and didn't take,, found they liked it, found they could buy the stuff, and became drug addicted.
Also ... it isn't all prescription opiates by any means.
A lot of those addicts found out the heroin and fentanyl on the street is cheaper than oxy or whatever, and switched to street drugs.
I read that the Mexican Sinaloa cartel is switching to smuggling fentanyl instead of pot, coke, and heroin because it is so much more profitable. And it isn't profitable because people Aren't addicted. (
http://www.ntd.tv/2018/02/10/dea-an...boston-police-seize-enough-fentanyl-to-kill-entire-population-of-massachusetts/) (Near the end, scroll down to the last bold section.)