The point to this is that if we are not careful, we can become dissatisfied and accustomed to the experience of injustice. Not real injustice, but perceived injustice. We very easily fall into a rut where we find appreciation in everything that goes our way, and we lash out when things do not go OUR way.  When things do not go OUR way, we feel powerless which causes us to become angry and rebellious toward authority.