All lifeforms will use the resources in their environment to the greatest extent they can. Our use comes along with ego attached but that is the human way.
There are five natural factors that determine and will continue to determine our history and future.
* All life reproduces to the maximum their environment allows(population density).
* All life will use all the resources in its environment to promote its present living (population pressure).
* Much of life manifest an us against them protectionism (even plants release poisons to the soil to protect their territory. This is the convergence of territoriality (which is manifest by all life) and the need to belong for this dependently social animal called human.
* We are immersed in an environment of our own making and our "brilliance" threatens us with unintended consequences (whether agriculture or nuclear power).
* Groups larger than the small group of 30 to 200 people, which is the social environment in which we evolved for a million years, creates power-over and inequality.
These five factors are a natural part of life and being human. For more detailed exposition:
http://sunweber.blogspot.com/2011/05/we-are-here.html