Much of the trend towards self-centeredness in marriage is evident in attitudes toward children, and how much of the developed world avoids them. And in that vein, the words of Joseph Smith, the prophet:
"The women of the latter-day saints are more beloved of the living God than any other women, because they are willing to bear His children." (The Prophet Joseph Smith by Truman G. Madsen)
“the time would come when none but the women of the Latter-day Saints would be willing to bear children.” (Young Woman’s Journal, Nov. 1890, 81)
This is actually severe enough that some developed countries have a negative growth rate, and the world population is soon slated to start shrinking. But that is a post for another day.