Shotgun marriages went away. I haven't seen good studies that two parents hating each other for being trapped into a marriage was a good, or bad, thing for kids.
George Akerlof and Janet Yellen look at the decline in shotgun marriages and rise in the births out of wedlock.
www.brookings.edu
And the bullying and societal disdain plays no role in that?
The last two items are solved by needle exchanges, but it isn't liberals who oppose that. Someone hooked on intravenous drugs aren't going off because they have to share needles. People who aren't hooked aren't saying, "look, a needle exchange, time to become an intravenous addict".
To the other, there have always been drug addicts and alcoholics. Even back in the ancient days. Of course alcoholism America largely accepted for a long time. Otis on Andy Griffith was funny, and accepted. A huge part of today's drug addictions came about from LEGAL narcotics. Some people get hooked on them and hooked quickly and we had doctors prescribing them like candy while pharma encouraged it.