Married people tend to be happier than single people. According to a recent study, 40% of married people said they were generally happier with their life while only 25% of single people said they were generally happy with their life. Some researchers speculate that this may be due to more sex or because they are a part of something bigger than themself.
Better Relationships with Children
According to studies, parents who are married have better relationships with their kids, both while they're young and when they're adults. Divorce often weakens or breaks the mutual relationship felt by parents and their children. Adults who's parents were divorced describe less positive relationships with their parents, and are in fact 40% more likely to get divorced themselves.