MonkeyDust, here's a book that does an excellent job of discussing human behavior in the face of differing crisis over a few thousand years...and I think it might help explian the viewpoints of Ludi and others...
Collapse: How Societies Choose to Fail or Succeed
$this->bbcode_second_pass_quote('', '[')b]From Publishers Weekly
Starred Review. In his Pulitzer Prize–winning bestseller
Guns, Germs, and Steel, geographer Diamond laid out a grand view of the organic roots of human civilizations in flora, fauna, climate and geology.
That vision takes on apocalyptic overtones in this fascinating comparative study of societies that have, sometimes fatally, undermined their own ecological foundations. Diamond examines storied examples of human economic and social collapse, and even extinction, including Easter Island, classical Mayan civilization and the Greenland Norse. He explores patterns of population growth, overfarming, overgrazing and overhunting, often abetted by drought, cold, rigid social mores and warfare, that lead inexorably to vicious circles of deforestation, erosion and starvation prompted by the disappearance of plant and animal food sources.
Extending his treatment to contemporary environmental trouble spots, from Montana to China to Australia, he finds today's global, technologically advanced civilization very far from solving the problems that plagued primitive, isolated communities in the remote past.
At times Diamond comes close to a counsel of despair when contemplating the environmental havoc engulfing our rapidly industrializing planet, but he holds out hope at examples of sustainability from highland New Guinea's age-old but highly diverse and efficient agriculture to Japan's rigorous program of forest protection and, less convincingly, in recent green consumerism initiatives. Diamond is a brilliant expositor of everything from anthropology to zoology, providing a lucid background of scientific lore to support a stimulating, incisive historical account of these many declines and falls. Readers will find his book an enthralling, and disturbing, reminder of the indissoluble links that bind humans to nature.
I highly recommend this book for a historical analysis of human behavior in the face of divergent sociological, enviromental and ecological challenges.