Diagnosing your spouse as the problem means that your microscope lens may be too narrowly focused. You are failing to notice how the habits you both have developed and the roles you've both played have contributed to your unworkable marriage. Unfortunately, you take those habits with you when you go. People discover that the grass isn't any greener on the other side after all. Then the decision to divorce a second time is often less agonizing since there's familiarity with the process.
Many people leave their marriages expecting the arguments to stop.
That these two human beings once shared a cordial or loving relationship is almost unthinkable because all that remains of their shared history is hatred. What also continues to amaze me is how even many years of physical separation fail to free these couples from intense emotional bonds. Their inability to resolve certain child-rearing issues reflects their inability to let go of each other. If you have children and are considering divorce, you must remember that your spouse will always be your children's parent, no matter what you do. This contact serves as a constant reminder of the past.