I think about all of the miserable people in my psychiatric clinic. Then I multiply by ten psychiatrists in my clinic. Then I multiply by ten similarly-sized clinics in my city. Then I multiply by a thousand such cities in the United States. Then I multiply by hundreds of countries in the world, and by that time my brain has mercifully stopped being able to visualize what that signifies.~ Scott Alexander from, http://slatestarcodex.com/2015/12/24/how-bad-are-things/
The really interesting part of the article is where he whipped up a random “person” generator and fed it the best-estimate percentages of various problems. (Chance of drug addiction, chance of certain psychosis, etc.) He then generated a bunch of random people and, as is to be expected when the percentage chance for problems is low, he got a significant number of people who are “no problems.”
…and then he sketches (from his own direct experience) several types—not specific examples, but a type of person whom he sees many examples of—who fit into the “no problems” bucket of the “random person generator.” The take-away is that, yes, things are VERY bad.