I grew up in HI in the 70's... you could walk out to the cane fields, and if not greedy, pick what you wanted, dry it out, and have some good stuff. When I moved back to the mainland in 77, middle of my Jr year of HS, the stuff available was pretty nasty.
This year in CO, it's on the ballot for legalization... not just medical use, but personal use. I can't wait to see the results.