Your article is on point. I've been seeing a video on YT comparing heroin users with regular patients at the hospital taking morphine. While morphine is more powerful than heroin because it's more pure, people don't become addicts after staying at the hospital. They also made an experiment with rats having accesss to heroin in 2 different settings : one with an empty cage and the other with a cage full of other rats and games. They saw that in the second cage the rats didn't need heroin. They were saying it's because of the connexion you have with people around you that you don't become an addict.