Very good observation from David Suzuki in an interview:

What’s happened is a fundamental shift in the last 100 years that now blinds us from being able to see our place on the planet. 85 per cent of us in Canada now live in big cities. We’ve been utterly transformed in 100 years from being a farming animal to a big city dweller. And in the big city, people think, “As long as we have parks out there, where we can go camping and playing in, well who needs nature? My important thing is my job; I need a job in order to be able to go out and buy the things I want.”