The good and the bad

Without so many bad things in life,we won't value the good.. Take for example
Without sickness or good health we won't value good health,without poverty we won't value wealth
Without betrayals we won't value trust
Without enemies we won't value friends
Without death we won't value life
All these bad sides of life are there so we can value the good... Not necessarily happening to us but around us... So we can value it..