Elizabeth Gilbert, in her book about marriage, Commitment, lays out her interpretation of a Rutgers report on divorce statistics. Here’s her list of things that correlate with divorce, in the order she mentions them. She lays them out with a lot more subtlety, humor, and personality, but read the book if you want that.

Your parents are divorced

You are alcoholic

You are mentally ill

You cheat on your spouse

You gamble compulsively

You are violent

You are younger than 25

You have not gone to college (especially the woman)

You have children

You lived with your spouse before marriage

You have different racial backgrounds

You are different ages

You have different religions

You have different ethnic backgrounds

You have different cultural backgrounds

You have different careers

You don’t know your neighbors

You don’t belong to social clubs

You don’t live near your families

You are not religious

The man does not do housework