At the same time, there is an enormous potential windfall in the taxation of marijuana. It is estimated that pot is the largest cash crop in California, with annual revenues approaching $14 billion. A 10% pot tax would yield $1.4 billion in California alone. And that's probably a fraction of the revenues that would be available — and of the economic impact, with thousands of new jobs in agriculture, packaging, marketing and advertising. A veritable marijuana economic-stimulus package! (TIME.COM)
I am no expert in marijuana but it's been consumed since prehistory. It's a form of drug and naturally it's prohibited unless you want to be stoned to death or in modern terms, be imprisoned.
I've seen friends do it out of fun. And personally, comparing it to alcohol, I prefer the company of stoned out friends to drunk friends. Well, that must say a lot.