Most parents want to see their children regularly when their relationship breaks down. Often the agenda is an adult one, that of equality and fairness, rather than what is in the best interests of the children themselves. 

Now couples are 'birdnesting' - taking turns to stay and live in the family home avoiding the weekly turn and turn about as children commute from one new home to the other. That means they can stay in familiar surroundings and face less disruption to their lives. A good temporary solution but maybe not the best one where spouses are keen to extricate themselves from joint ownership or ongoing financial ties.