And possibly the very old.
I reckon the unsaid reason for the illegality of most drugs is that they render the user unuseful and at risk of death. For that reason I think they should be legalized for people already in those categories.
I for one will probably never press the self-distruct button on my life by trying out recreational drugs. But I am fully behind the notion that when I am on my deathbed I will be wanting to see what all the fuss was about. “Hell I’m dead soon anyway” I don’t want to die having not experienced those highs that made it seem worth it for the youngsters to throw their lives away"