Holy people are supposed to forgive. A Christian lives differently. He answers to a higher calling. But sometimes it doesn't happen. He bleeds and hurts and gets stuck in unforgiveness. It is unnatural to look the other way and forgive. We naturally hang onto grudges and remember how we got hurt. We feel the pain. It stings. People do need to be held accountable for their actions. At the same time we can also forgive them so that the action doesn't keep replaying over and over again in our minds. If someone steals something they need to give it back or make restitution. I can forgive them for their bad choice, and it would also make sense to protect my belongings and not lend to that person. It's good to set healthy boundaries.
The choice to forgive exonerates me from resentment and hate. It liberates me from living in the trap of wrong emotional ties. People hurt people sometimes because they are hurting and have lots of baggage they don't know how to unpack, or just don't want to do the hard work. Forgiveness doesn't get entangled in another person's unresolved issues. It buries me in a new life.