I think you can consider the human nature as one, that is broken in terms of acting in a way which is not congruent with what the nature truly is or better: should be. Mankind has a lot of names for it: Sin, bad karma, whatever. But you have to see the tendency to bad habit because of the reasons kuky named. If nobody would act in these bad habits, no security would be necessary and no war machinery. All would be peace and joy or whatever. Point is, it isn't that way and we have to deal with that.