Its human nature to always want more. Calls for people to conserve more wont work because of this. We have to start taxing pollution so that the external costs are included in the products and services we consume. Then only the few filthy rich will be able to afford a polluting lifestyle.
Do you mean to argue that those who don't want more are not human? Or that a recluse who rejects consumer society, or a practitioner of a minimalist, spartan lifestyle, are still somehow "wanting more"?
What would be an example of not wanting more? In a basic sense, everyone wants more food, and water, in order to live, but that's true of all life and not limited to human nature.
