Sometimes I felt like the father who fainted when his son asked for the garage keys and came out with the lawn mower. Americans are seen by other people in the world as eating too much, drinking too much, and driving too much. We make some of the same observations about ourselves. Parents think their children eat too much of the wrong things, particularly junk foods. Many spouses accuse their partners of spending too much, and every pastor I know thinks people stay away from worship too much.
Sin is the great separator.
If it pushes in far enough, our relationships split like dry logs. Jesus' remorse and longing for Jerusalem is as old as Adam. God's longing to gather us, and our love of selfish separation are as old as sin itself. The picture of the hen opening her wings to gather her chicks is a wonderful illustration, but it pales in comparison to the open and outstretched arms of Christ on the cross. But I cannot think of a better one.