Along the same lines, observing how different people react to different psychoactive substances (and talking to them about what they experience) also gives quit

Along the same lines, observing how different people react to different psychoactive substances (and talking to them about what they experience) also gives quite valuable insight into the diverse inner lives of people, imo. I also believe that that might be one of the main reasons of alcohol having established itself as the 'drug of choice' in society, even though there would have been a number of alternatives. Alcohol works great as a social lubricant because in moderate doses, it puts most people in very similar internal states, thus narrowing the gap between their internal worlds and making it easier to relate to others. With cannabis for example, even at low doses the drug affects people quite differently and makes it more complicated to model other people's inside world.