the declivity of the family bourgeois is an indirect fruit of the Capitalism and the liberation of the woman. Now, the familiar unions are very varied, because they are based not as much on the economy as in the feelings, maintains professor Ignacio Sotelo, eminent sociologist. Before the crisis of the traditional family in the developed countries more, the professor argues that to the traditional conservatives, who define the family like the basic institution of the society, he oppresses to them to verify that the evolution exists and the diversity of types in which is had decomposed. Reduced to a conglomerate of affective bonds, the family has stopped forming the economic base of our existence, without she does not provide either estatus social that she identifies to us. That one expresses in feelings and affection favors that an enormous variety of types unfolds: legalized unions in fact or, in which both spouses work or only one, with or without children, biological or adoptive, one-parent, a single person, generally the woman, with a son or several, or those families that they reunite children had in different marriages, heterosexual or homosexual unions. the family bourgeois, sustained in the affective relation and the economic security, is now more unstable. The birth control, the education and the labor activity of the women have facilitated who many young people resign to the familiar bond, and that the variety of types of family has increased until the point of which the institution even threatens disappearing. Professor Sotelo argues that, in the Antiquity, the family lost her political dimension; in modernity, the economic one; now only it conserves the affective one, and the feelings very allow variable forms. In past times it was very difficult to survive besides the familiar protection. It is enough with remembering the destiny of the woman who was unmarried or she dared to break the marriage; she was excluded socially.