Because of the omissions there can be no consent, making a spiritual bond impossible. There is no commitment. If either partner to a marriage does not intend absolute faithfulness there is no bond which can hold them together. These are marriages with incredible amounts of psychological and physical abuse. Marriages with abuse can never last.
Marriages based on mere agreement usually become unhappy.
Even if there is no divorce the people are miserable. But there are real marriages. These are based on consent. The two people involved have worked hard to get to know each other, they have similar values, beliefs, and lifestyles. Good and solid marriage preparation is an important part of getting people ready and able to give consent.