There's many issues here:
1. Failed parenting: I think the breakdown of the traditional household is part of it. Kids are in flux constantly or given so much latitude these days. Too many parents who feel they need to be their kids friends vs the occasional ####### parent that is needed. Kids don't fear their parents anymore. When I was growing up, a large part of the reason I had no interest in drugs was that I KNEW, without a shadow of a doubt, that A) my parents WOULD find out and B) would whoop the ever-living dogsh!t out of me ....... several times over. It was unacceptable well beyond even being a point of conversation. It just wasn't going to happen. Hell, even as a teen, my folks would occasionally come through my room while I was gone under the premise of "cleaning my pig pit of a room." Come on now .... mom and dad were just checking in to make sure I wasn't hiding something. Invasion of privacy? Maybe - but I lived under their roof. And being a parent, sometimes means pissing your kids off in the interest of their well being.
2. Failed health system - Wifey and I spoke of this yesterday, but growing up (and I'm not old .... at least in my head) and having several various surgeries (albeit relatively minor), pain meds were dished out in extreme moderation. Your instructions were "take Tylenol" and here is a prescription for a few pills of a little something stronger IF you really need it. You were expected to MANAGE your pain and you were to expect to be uncomfortable for a couple/few days. No one wants to feel any discomfort. There IS a difference between uncomfortable and in pain. But even then, you had to make a separate trip to the drug store to obtain these other pills (an inconvenience) ..... and there were enough for a COUPLE of days to tide you over. Now, ANY procedure results in the office given you a bottle of something strong and it's usually for more pills than reasonably needed. People get through these things with numerous leftovers. They are over-prescribed both in need and in volume. That's why so many are available for abuse/sale, etc.