Well, if we let our spouse down they might leave us if we don't make them feel better. So it is in our own self interest to make that spouse feel better, if we want to keep them. I think it is all about risks and rewards. Not really about duty at all. If you want someone around, you try to make them happy with your behavior. If that means explaining, then you explain. I don't see any "duty" in that, just selfishness. And if you don't explain, it means you couldn't be bothered, because the person and the event aren't that important.
Rudeness is very subjective, imo. And if you want a person around, you learn what their idea of rudeness is, and if you don't really care, you don't. But again, it is mere self interest that makes one go the extra distance. IMO |