In his book,
Psychiatry and the Human Condition, Bruce Charlton contends that mental illness in some form or other, at some times, and to some degree, is a virtually inescapable condition of modern life.
Imagine a world in which many of the people suffer from psychiatric symptoms for most of the time and very few live out their lifespan without suffering periods of significant psychiatric illness. I am describing the world we live in.
In addition to overt mental illness, add those who suffer from sleep deprivation or insomnia, or are miserable due to chronic pain or disease, or are intoxicated or suffering its aftermath:
When considered in this way, it is clear that few people are free of psychiatric symptoms for sustained periods of time. And if psychiatric symptoms are a matter of everyday life, then so - potentially - is their treatment. Such is the scale that professional management is inconceivable, as well as undesirable. Logistically, this means an expansion in psychiatric self-help - which entails expertise in self-diagnosis, self-treatment and the self-evaluation evaluation of this process.
The human condition, as we experience it in contemporary life, is one where psychiatric symptoms are endemic, being constantly present in the population - and present at a remarkably high prevalence.
Now, why should this be? The first part of Charlton's answer is that humans did not evolve to be happy; we evolved to survive and reproduce, with happiness being merely an incentive to do those things. Happiness is merely the condition in which the characteristic state of mind is one of having one's needs and goals satisfied. The second part of the answer is that we live in a society radically different from the one in which we evolved and for which we seem to be best suited, namely the society of hunter-gatherers.
Charlton is no Utopian; nevertheless, he makes a good case that, on average, human beings living in their "natural", paleolithic state are happier than in modern industrial society. Also, consistent with his realism, he acknowledges that, of the three main types of societies - hunter-gatherer, agricultural, and industrial - agricultural society makes for the most miserable people, who when given the chance flock to industrial society, preferring, e.g., work in a coal mine to work as an agricultural laborer.
I'm sure we all thought that Rousseau and his noble savage had been thoroughly debunked. While paleolithic society was hardly a paradise, it did have several aspects conducive to human mental health. They were healthy in body, possessed abundant leisure, and were egalitarian:
In summary, the ancestral hunter gatherers experienced a way of life that was - in world historical terms - leisured and egalitarian, and enjoyed health and life expectancy at a high level. Of the three kinds of society as described by Gellner: hunter-gatherer, agrarian, and mercantile, it is probable that hunter-gatherers had the best life, overall. Hunter gatherer societies are the happiest and peasant societies are the most miserable - while industrial-mercantile societies such as our own lie somewhere in between.
One very good piece of evidence for the adaptive nature of primitive societies lies in child-rearing:
The ‘naturalness’ of nomadic foraging is also shown by differences in the harshness of child rearing practices in different types of society. Child rearing involves varying elements of forcible training that are necessary to prepare children for their social role. Peasant societies typically employ extremely repressive forms of socialization, extreme discipline, restriction, and the use of child labour. Industrial mercantile societies (such as our own) are much less tough on children - but still require many unnatural behaviors (eg. sitting in classrooms or examination halls for long periods of time without speaking or moving). But nomadic foragers are able and willing to give their children even more freedom than the most liberal ‘modern parent’ - and such a relaxed upbringing of unstructured interaction with peers apparently prepares the child properly for the adult life to come.
This post only touches on one small part of Charlton's rich, fruitful book, on which I may write more later. He's made the entire book available online, and it's well worth your time.