The issue is not the breakdown of the nuclear family. This kinship structure is an anomaly in humankind's history. Families of whatever constitution strive to live by them against incredible odds. William Julius Wilson's research in Chicago corroborates Bourgois'. These calls for community values would not exist if the biologically determined need for community carried by all human beings as a birth right was being met.
Fear is the motivating factor behind the entrenchment of human beings into family values.
Folks are doing the best they can in the face of the onslaught on their lives such as downsizing, environmental degradation, loss of real income, media blitzes on violence, a new age of child rearing in which children are taught to question, reflect, and resist. All that is sacred to one's building existential meaning in one's life is under assault. The human animal retreats into itself. Networks are exclusive groups connected through focusing on specific, explicit and shared interests. Networks, by comparison, only require adherence to the specific, shared interest around which the network is formed.