There are lots of things people don't want to live next to. For example, lots of folks don't want to live near the wrong type of people. Typically we consider

There are lots of things people don't want to live next to. For example, lots of folks don't want to live near the wrong type of people. Typically we consider those desires morally invalid and not something to be supported. Why is "short term" a morally valid way to characterize the "wrong type of people"?