The Left has always sought single, non-values-based explanations for human behavior.

The welfare state inhibits the maturation of its young citizens into responsible adults

The welfare state is predicate don collecting money from today's workers in order to pay for those who paid in before them. But today's workers don't have enough money to sustain the scheme, and there are too few of them to do so. As a result, virtually every welfare state in Europe, and many American states, like California are going broke.

A bad mood is like bad breath. Both are wrong to inflict onto others

Rather than dividing the world between good and evil, the Left divided the world in terms of economics. Economic classes, not moral values, explained human behavior. Therefore, to cite a common example, poverty, not one's moral value system, or lack of it, caused crime.

The fact is that people who strap bombs to their bodies to blow up families at a Bar Mitzvah in Israel, plant bombs at a nightclub in Bali, or slit stewardesses' throats and ram airplanes filled with innocent Americans into office buildings do not do so for any reason related to poverty. They do so because they hold evil beliefs and have deformed consciences

From their teenage years on, children are considerably more capable of causing parents unhappiness than bringing them happiness. That is one reason parents who rely on their children for happiness make both their children and themselves miserable.