I have long held the opinion, from a morality point of view, just because there are starving people in Africa, or homeless in Chicago, or even one of my best friends dying from cancer, etc., I don't have to enjoy getting shit on.
Pardon my verbage, but at times like this, I think it is appropriate to call things what they are.
I would call this a principle of Subjectivism, because the circumstances of other's lives do not require me to be pleased with things that are not good. I am not going to be objective and think "oh well, others have it so much worse than I do" and let it go at that. It's not an invalid thought, but it's not a realistic basis for rational concerns. Overall happiness and satisfaction might can be based on objective thinking, but not an immediate complaint.
Another concept: Proximity. This is very similar to above, if not the same. What happens to me matters more to me than other things happening to other people. I don't have to feel selfish or ethically deficient. Just because my neighbor is dying, it doesn't make me any happier my house burned down.
Memphis in the Meantime
2 hours ago