Children are supposed to help hold a marriage together. They do this in a number of ways. For instance, they demand so much attention that a husband and wife, concentrating on their children, fail to notice each other's faults.
And when I go around and talk to schools, what I tell the kids are, first of all, you have to accept each other's differences. Some of you are going to be a crappy football player, some of you are going to be a great mathematician. Whatever it is, accept each other's differences and help prop each other up.