Housing, commerce, and jobs are sacrificed to spotted owls and snail darters. As a consequence, man is to be prohibited from using nature for his own ends. Since nature supposedly has value and goodness in itself, any human action which changes the environment is necessarily immoral. The expressed goal of environmentalism is to prevent man from changing his environment, from intruding on nature. That is why environmentalism is fundamentally anti-man.
Intrusion is necessary for human survival.
Only by intrusion can man avoid pestilence and famine. Only by intrusion can man control his life and project long-range goals. Intrusion is a requirement of human nature. Man has no legitimate needs, but trees, ponds and bacteria somehow do. Heed the words of the consistent environmentalists.