More than that, and perhaps of more interest to libertarians and other lovers of freedom, families are, along with organized religion, the most important "mediating institutions" between the individual and the state. Mediating institutions are groups of people large and small that help serve as a check on the government, and provide individuals with a way of influencing the state much more effectively than they can do on their own. These independent sources of authority are essential to the preservation of liberty: without them the behemoth of the state would easily crush the lone citizen. That's why totalitarians of every stripe make the subjugation or even destruction of these institutions (especially the family and organized religion) a top priority. Giving the state the power to manipulate, redefine and hence to unmake such essential protectors of freedom must necessarily lead to an ever more powerful state, and an ever smaller place for individual liberty.