1. Just because the vast majority of people consume something, this doesn’t mean it’s healthy. The largest epidemic is one of bad food: Carbohydrates.
2. Mainstream society is completely backwards regarding alcohol, smoking and caffeine at the very same time it’s criminalizing many of the drugs that are of entirely different nature, such as MDMA, Psilocybin. The current drug policies to me are one of the best examples how our current society is rotten to the core, something that one needs to treat as one’s enemy, something one needs to protect oneself from, as well as all your loved ones.
3. See also Sebids-About-Caffeine.
4. Just because only few people consume or do something, this doesn’t mean that everyone else isn’t deeply lacking it: Vitamin D, psilocybin, exercise, reading books.