Americans are so shaped and stamped by their legacy of individualism that the concepts of community virtue and moral obligation have been discredited In our popular culture, adulthood is too often defined as doing what you want to do, not what you are supposed to do. Making a baby is a sign of status, while caring for one is not. Right and wrong are old-fashioned, politically incorrect concepts. And sin? Forget it. The problem doesn't end with ghetto kids getting pregnant and going on welfare. Half of all Americans who marry and h…