This. It seems like a losing and expensive fight I know.
My parents were active in the foster care program when I was growing up, they took in drug and alcohol abuse teens. Most of them made it to recovery once they were removed from the problems that made them start using (poor families, crappy parents, crappy friends, etc). Some did not.
Even though they are adults and out of the system we still maintain some contact with and are there for if needed. When sober they are frequently some of the most academically intelligent people I know, but addiction and poor decision making kept them from completing college and getting decent jobs. I know a fairly brilliant mathematician who mixes concrete for a living because of a felony robbery conviction(which also means at-least in PA I can't let this person come into my house) and repeat DUIs. I don't want to see anymore people who fall into this trap.
Alcohol maybe equal to certain drugs but it is far less addicting to the vast majority of people. A bit like guns, just because it's legal to own doesn't mean everybody should. If everyone could make good decisions all the time and know their limits it might be possible for wholesale legalization.
Point number 6 is one I really agree with, but again it's expensive. We need to stop throwing addicts in jail and actually help them. Atleast the ones who want to be helped.