We build a stronger relationship with people when we see them as human beings with whom we share similarities in terms of family and life situations. It is very difficult to form strong relationships with people about whom we know very little.
We feel more connected to “full” people. For example, take John, the accountant. If I think of John as an accountant, I might put him into a box of what I think I know about accountants. I might not feel connected to accountants and will treat him accordingly. But when I think of John as a keen mountain climber and outdoor adventurer with two children, one of whom is graduating from university next month, then John becomes human to me, and I can feel connected to him.