To people in Idaho, Montana and Wyoming, where the population is still fairly sparse, it would appear we still have a fair amount of under-utilized land and resources. But as the population increases dramatically in other parts of the country, your lifestyle will also be severely impacted as well. The people in Los Angeles, New York, Tokyo, New Delhi or Bangladesh will hardly agree that the people's argument in Idaho, Montana and Wyoming is an intelligent, logical or rational approach to the issue. Scientists already have constructed a computer model of the known resources and the current burgeoning population which predicts a major calamity by the 2050 when we will have in a large part, depleted our resources of land, food and water. We will be fighting and killing each other to gain control of and preserve for only ourselves, what few resources remain.
Animals are extremely territorial.
No less territorial is the human animal. This is called intelligence. Not to imply that the other animals can't or aren't able to achieve to some degree a similar, albeit a lower degree of intelligence, the human animal has the ability to transcend mere instinct, to rationally construct his life and environment to insure the preservation of him, his specie and all species for eons to come. A major calamity, or in other words, Armageddon by the year 2050. For those who are religious or supernaturally inclined and envision Armageddon as raining down pillars of fire from heaven, God is not showy of flashy by works in natural ways.