Well, in this case chimps but I leave it to my gentle readers to figure out where that quote is from.

What do chimps kill for?

Land.

All those environmentalists and social planning retards that dream of having all the humans boxed into a little hive complex are messing with mother nature.

You’re going to end up with block wars:

Having territory is a basic, animalistic, primal drive.

It is innate, it may not be necessary for survival, just as sex is not necessary in order to live, but the absence of either impacts human behavior in negative ways.