So what do the decades of research on fathers say? Boys from fatherless families are twice as likely to end up in prison before age 30. Girls raised in homes without their fathers are much more likely to engage in early sexual behavior and end up pregnant as teenagers—for example, girls whose fathers left home before their daughters turned six are six times more likely to end up pregnant as teenagers. Children who grow up without married mothers and fathers are also more likely to experience depression, behavioral problems, and school expulsion.
There is also more abuse in homes without fathers. In studies of physical, sexual, and emotional abuse, fathers living with their children emerge as strong protectors—both through watching over their children’s activities and communicating to others that they will protect them. In one study, abuse was 10 times more likely for children in homes with their mother and an unrelated boyfriend.
h/t Big Blue Wave