Knowing right and wrong separates us from animals, and we kill each other over it.
Because we can understand broader concepts (i.e. sarcasm) we can take it to the furthest limit of response (i.e. I shot you in the face, might makes right, you're dead and can't argue).
Another words, war exists because of territorial disputes*, as well as disputes over precious metals** (and maybe food).
*It continues to exist because people continue to have territorial disputes. You can't, after all, have "American Soil" and "America's Army" without America.
**Africa is in the shitter.
Because we can understand broader concepts (i.e. sarcasm) we can take it to the furthest limit of response (i.e. I shot you in the face, might makes right, you're dead and can't argue).
Another words, war exists because of territorial disputes*, as well as disputes over precious metals** (and maybe food).
*It continues to exist because people continue to have territorial disputes. You can't, after all, have "American Soil" and "America's Army" without America.
**Africa is in the shitter.