I want to write more on this, but I only have time for a short post now. I'm currently reading Merchants of Despair by Robert Zubrin. It's turning out to be one of the most important books I've read in a while. Zubrin traces the history of the eugenics movement and its connection with Malthusian thinking, and the influence of a certain pathological mindset that views humanity as a "disease" or "cancer" upon the earth.
This anti-human pathology is insidious and disturbingly widespread. There is, for example, Peter Singer who recently won Australia's highest civic award.
I'll write more on this soon.