When a home is torn up by fighting, it is the children who pay the greatest price. Some people quickly advocate leaving the relationship, but I try to tell people to never allow their relationships to slip into such a horrible pit that they can no longer be civil with one another. It's a horrible place to be.
Remember your children the next time you see your spouse. Remember that the person you're currently angry with helped you make those beautiful little smiling faces. If you can't love the spouse for that, at least respect him/her for it.