Already for most humans, the only respite they find from their own minds is to occasionally revert to a level of consciousness below thought. Everyone does that every night during sleep. But this also happens to some extent through sex, alcohol, and other drugs that suppress excessive mind activity. If it weren't for alcohol, tranquilizers, antidepressants, as well as the illegal drugs, which are all consumed in vast quantities, the insanity of the human mind would become even more glaringly obvious than it is already. I believe that, if deprived of their drugs, a large part of the population would become a danger to themselves and others.
— Eckhart Tolle