> In fact, people who live together before marriage are more likely to divorce, not less. In addition to what others have said, using divorce rate as a metric

> In fact, people who live together before marriage are more likely to divorce, not less. In addition to what others have said, using divorce rate as a metric of relationship success is itself a flawed method of looking at the problem. As an example, many folks consider divorce to be an immoral act. They would rather sit in an unhappy marriage for decades than get divorced. Thus, it could easily be that those willing to cohabit prior to marriage also tend to be those who do not think divorce is an immoral act, so that the statistical observation you're making here (assuming it's even true) is really just a reflection of the underlying beliefs of two different groups of people regarding the act of divorce.