I used them judiciously when I was a teenager and in my early 20s. Use is one thing, abuse is another.
Your comment about how "we don't understand how they (psychedelics) affect brains" holds true for pretty much anything we put in our bodies, so there's no real reason to draw the line at psychedelics. That said, it's not entirely true to say we don't understand _any_ of the action, because we do. If you want to know the answer to deeper questions like the effect on long-term development and so on, lower the barrier to studying the effects, and go from there.
I can't think of any good reason why psychedelics cannot be prescribed, but Oxycontin or Adderall or whatever can, and you can go buy alcohol and cigarettes at the store.
Your comment about how "we don't understand how they (psychedelics) affect brains" holds true for pretty much anything we put in our bodies, so there's no real reason to draw the line at psychedelics. That said, it's not entirely true to say we don't understand _any_ of the action, because we do. If you want to know the answer to deeper questions like the effect on long-term development and so on, lower the barrier to studying the effects, and go from there.
I can't think of any good reason why psychedelics cannot be prescribed, but Oxycontin or Adderall or whatever can, and you can go buy alcohol and cigarettes at the store.