Which is the greater priority: marriage or parenting? That’s like asking whether water or food should be the priority for the human body. The truth is, they are both priorities. Parents who do not seek to be good parents are delinquent in their responsibilities. One the other hand, couples who do not give priority to their marriage are also delinquent.
A couple who neglects their children in pursuit of their own happiness will live to regret their decision. And, a couple who neglects their marriage while focusing all their energy on their children will also live to regret their choice. Your children desperately need a model of what a healthy marriage looks like. If your children do not learn relational skills they will enter marriage with a huge handicap.