Why would the party actively work to turn children against their parents?

In Winston's time, the Party has removed such interfamilial loyalty, demanding that all love and loyalty be reserved for Big Brother and the Party. In this way, the bonds between parents and children are broken. Even worse, children commonly report their parents to the Thought Police, placing the Party above the lives of their mother and father. The Party's eventual goal is to destroy the family unit entirely and have all children raised in Party facilities. The Party has no room for love, unless that love is directed with full force at Big Brother and Oceania.