I'm not angry, I'm just sayin'...sometimes goodbye is a second chance.- Shinedown
You have noticed, I am sure, that songwriters tend to work out personal issues through their craft. Not always, mind you, but often enough.
In the above-quoted example, the notion is put forth that sometimes the best way to love someone and get along with them is to be apart from them.
I can see the truth in that, can't you? Barring a deep-seated bitterness, we usually remember the good when we recall the past. I think fondly of friends and family who are separated by many years and many miles.
After all, it would be churlish of me to recall the minor slights and annoyances I suffered at their hands, would it not?
I have been blessed with forgetfulness of the occasional wounds that must come when we interact with our fellow fallen humans.
It may just be a product of old age that this is so. Or perhaps all the drugs I did way back in the sixties.
At any rate, I thank God for a short memory. It alleviates a lot of pain, I think.
I would be especially fearful, I were Buddhist, say, of the sin of scorekeeping.
One might come back in the next life as an elephant.
Sounds like a drag.