Intellectuals propounded the idea that man should be freed from the shackles of social convention and self-control, and the government, without any demand from below, enacted laws that promoted unrestrained behavior and created a welfare system that protected people from some of its economic consequences.
Just as the IMF is the bank of last resort, encouraging commercial banks to make unwise loans to countries that they know the IMF will bail out, so the state is the parent of last resort--or, more often than not, of first resort. The state, guided by the apparently generous and humane philosophy that no child, whatever its origins, should suffer deprivation, gives assistance to any child, or rather the mother of any child, once it has come into being. In matters of public housing, it is actually advantageous for a mother to put herself at a disadvantage, to be a single mother, without support from the fathers of the children and dependent on the state for income. She is then a priority; she won't pay local taxes, rent, or utility bills.
As for the men, the state absolves them of all responsibility for their children. The state is now father to the child. The biological father is therefore free to use whatever income he has as pocket money, for entertainment and little treats. He is thereby reduced to the status of a child, though a spoiled child with the physical capabilities of a man: petulant, demanding, querulous, self-centered, and violent if he doesn't get his own way. The violence escalates and becomes a habit. A spoiled brat becomes an evil tyrant.Remember that this is all coming from a man with boots on the ground. A doctor who has treated thousands of impoverished Londoners, and who has been witness to their lives and their relationship with the state.