I can see your point. And maybe you're right in some cases.

But I remember a newspaper article of many years ago - a couple decades, but it's stuck in my mind.

Someone was biking on a road very close to where I lived at the time, and got pushed over and injured pretty severely by some hooligan teenage boys driving by in a car. It turns out he was a pastor. He forgave the boys, and didn't press charges. Or maybe he just recommended clemency, and the boys got off with a warning, something like that.

Then it turns out that he regretted his path, because the boys, at least some of them, continued in their juvenile delinquent ways, and I think they may have even continued to push people on bikes over, from their car.

So bottom line - I think holding a grudge can be a valuable thing. More on a societal level than on a personal level, maybe. Because honestly, it would be convenient to head to a Starbucks sometimes.