Society and culture doesn't grow organically. They are created and manufactured by the people with wealth and power. For the time being, those with wealth and power have decided that the breakdown of the family is in their interest. But it could shift quickly if the people in charge want it to. An extreme example is china where they encouraged women to have lots of children in order to strengthen their country. And not too long after that, they had a change of heart and encouraged the complete opposite - one child policy. Now it seems like they are backing off of it after a few decades of one child policy.
BS. You give them way too much credit. The world is too complex and dynamic for a queen ant to "create and manufacture" the efficiency of the ant hill.