Given that cannabis is far less dangerous than alcohol, both to the person having cannabis and to those nearby them, I think it should be treated very differently indeed! Alcohol use is responsible for like 90,000 deaths per year in the USA and cannabis close to 0 (there may be some related car accidents, I don't know, but no direct deaths and far fewer related ones).

Cannabis should be far more acceptable to use in modern society than alcohol. Persons having cannabis are much less likely to cause violence than those with alcohol, and are much more likely to think calmly about ways to improve the world.

I can think of 1000s more reasons why cannabis should be treated differently than alcohol by our governments and societies!