We're so individualized that it's possible someone could develop a tolerance, but it's not something that's noted in the literature. I'm all for it. It's totally absurd and insane to throw people in jail or prison for pot. In fact, marijuana is a very effective pain medication for some people. It's cheap, relatively safe, and it does the job.
More people use cannabis just for pleasure than any other purpose.
I have found cannabis widely used all over the world, and I think that it's use is increasing that eventually it'll be legalized because there will be no other choice. For many of these cultures that you've spent time with, herbs are integral to how they would treat any kind of illness. In the U.S., people tend to be diagnosed just by their symptoms, and I do believe that in other cultures, the whole person is better taken into account. Their personality, temperament. So that typically when a person goes to a traditional healer in India or in China or in the Amazon, the healer spends more time with them finding out who they are , and this helps greatly with the treatment.