3. It strengthens a couple’s relationship – Those using NFP are statistically less likely to divorce.
The effective use of NFP requires husband and wife to be in regular communication regarding her fertile and infertile times. In other words, they need to be willing and able to dialogue openly with each other regarding intimate details of their marriage relationship. Doing so in that arena can only enhance their communication skills and practices in other areas of their marriage and family life, and no one can doubt that open and honest communication is at the heart of every loving and lasting marriage. And when a couple has prayerfully discerned a need to avoid conception, they are encouraged to discover or remember other ways to express their love and affection for each other (e.g. “random acts of kindness” done for each other, providing emotional support for each other, and taking time for honest communication and prayer together).
Wilson, Mercedes Arzu; “The Practice of Natural Family Planning versus the Use of Artificial Birth Control: Family, Sexual and Moral Issues.” The Catholic Social Science Review, vol. VII, November 2002, pp. 185-211. www.lifeissues.net/writers/wils/wils_01naturalfamilyplanning1.html