As people, we are obsessed with the idea of fairness, as long as it is fair on our terms (and often in our favor). This is the difficulty with all human relationships. My sons were just arguing about the fairness of chores. Trevor doesn't believe it's fair that he is expected to do more than Connor. Meanwhile, Connor doesn't believe it's fair that Rowen doesn't have to do the same choirs that he has to do. I remember having similar concerns when I was their ages.
Then, of course, there is the saying "Life isn't fair" -- an expression often used by people who have what they want when they are explaining why another person didn't get the same. Instead of trying to make life more "fair," we often justify our unfair treatment of others due to times when life was unfair to us.
I hope that I will strive less to seek what is "fair" than to achieve what is right.