There is no single reason why we should forgive but as complicated humans living in a complicated world, forgiving is good for society. Forgiving can benefit us mentally, emotionally, relationally and even spiritually but to experience the depth of forgiveness at its fullest is to engage in one that is decisional and emotional.
R -Recall the hurt through imagination.
E -Empathize with, sympathize with, feel compassion for, and/or love the one who hurt you.
A -Give an altruistic gift of forgiveness.
C -Commit to the forgiveness you experienced.
H -Hold on to forgiveness when you doubt.
We must develop and maintain the capacity to forgive. He who is devoid of the power to forgive is devoid of the power to love. There is some good in the worst of us and some evil in the best of us. When we discover this, we are less prone to hate our enemies.
– Martin Luther King, Jr.