I think "recreational" is not the correct term to use for most of the people taking opioids without a prescription.

So many addicts start out using for some pain, and become addicted. They then buy from shady doctors or people who get drugs from shady doctors. Or they might use them to feel numb because they are depressed.

I am just not sure that a majority of illegal opioid users are people who started their habit by thinking "I am looking to have a good time to night, let me take some opioids"