From the article, "The Healing Power of Holding a Grudge0" by Simon Doonan, I agree with what he is saying based on the stories about his friend, that guy who shot his girlfriend, and a rape case.
In the story of when Simon's friend was killed and the killer killed himself afterwards, Simon says that a preacher suggested that it wasn't too early to be thinking of forgiveness. If my friend was murdered, and the killer killed himself, I would still want justice to be done so it doesn't happen to others. The other story of the guy who shot his girlfriend in the head in 2010, and left her clinging to life support, the uncle of that girl said that he would like to say to the guy face to face, that he forgives him for what he has done. I personally, would want the guy to be punished for what he has done, so it can show others that if you do something like this, then you will be punished. I'm not trying to sound like an awful dictator who doesn't care if people live or die, I'm trying to say that you can't just shoot someone and get away with it. Finally, in the rape case, the mother forgave the accused. But instead of offering to forgive him, she told him off, and to take his punishment like a man. Simon says that you can separate the forgivable, from the unforgivable. So from this article piece, I completely agree with what Simon Doonan is saying about grudges being kinda helpful. Because if you try to go through life, turning the other cheek all the time, then it's going to be a long, stressful life.