[Tarks]

"Cyrus explained softly to Adam the nature of a soldier ... He told his son of the sad dignity that can belong to a soldier, that he is necessary in the light of all the failures of man - the penalty of our frailties"

They exist because humans and our current behaviour are flawed, we haven't found better conflict resolution techniques.

The sad truth of this world is nothing is yours unless you can protect it. I know the reply button is right there but please stop spouting rubbish.