Available person-hours per child in a loving environment is highly connected to positive academic and emotional outcomes for children (some married couples still suffer from one partner being absent, even in the same house though). It’s no surprise that American school children are some of the most medicated for behavior modification.
Children respond to divorce worse than they do to the death of a parent.
Everyone is punished when more people around them in society is suffering. (except the extremely wealthy, who can afford gated communities with armed guards and who don’t have to ever interact with those below them on the income scale).