The rat park study found that a good environment did make opioids less attractive, but also found (and downplayed, dishonest science) that rats in the good envi

The rat park study found that a good environment did make opioids less attractive, but also found (and downplayed, dishonest science) that rats in the good environment still did prefer opiods to water when the opioids didn't have a bitter taste. https://en.m.wikipedia.org/wiki/Rat_Park https://en.m.wikipedia.org/wiki/Rat_Park