Lindsay Mitchell gets to the root of the problem of child abuse:
… the incidence of Harm Standard physical abuse was significantly lower for children living with two married biological parents compared to children living in all other conditions. An estimated 1.9 per 1,000 children living with two married biological parents suffered Harm Standard physical abuse, compared to 5.9 or more per 1,000 children in other circumstances. In addition, children whose single parent had an unmarried, live–in partner were at significantly higher risk of Harm Standard physical abuse (19.5 children per 1,000)…
This is not an indictment on everyone whose marriage fails.
Some children will have safer more stable homes with one parent than they had with both.
But that doesn’t change the statistics which show that children with one parent are more likely to be abused and those whose parent has a live-in partner are in even greater danger.