And most of the people I often hear explaining themselves are doing it in front of somebody who does not even care about them or could not care less about the thing they are explaining. Even if they listen to the explanation, it is often useless because they end up either not believing or simply still not caring. It is true, explaining yourself is most often a waste of time.
This your statement burst my brain, just as you have stated clearly there is no doubt that many create more issue or problem by letting some of their problem to people that don't even care, there is no doubt that explaining yourself to one who don't care is just like one in a locked room shouting and hearing his echoes that solve no problem instead may even have ear drum issue for reverse of echoes created by him.