“Our task to defend the family is not an easy one. Trends in the world diminish the significance of the family. Sadly, the sacred powers of procreation are desecrated by many people. And the divinely designed nature of marital intimacy is tarnished by the addictive, pernicious, and poisonous plague of pornography.”

Russell M. Nelson
                    “The Doctrinal Importance of Marriage and Children”  January 2012 Broadcast
 
http://www.lds.org/broadcasts/article/worldwide-leadership-training/2012/01/the-doctrinal-importance-of-marriage-and-children?lang=eng