Earthly families give us the best chance to make it back to God

"Though earthly families are far from perfect, they give God’s children the best chance to be welcomed to the world with the only love on earth that comes close to what we felt in heaven—parental love. Families are also the best way to preserve and pass on moral virtues and true principles that are most likely to lead us back to God’s presence."

- President Henry B. Eyring, First Counselor in the First Presidency, "Gathering the Family of God," General Conference, April 2017

“Happiness in marriage and parenthood can exceed a thousand times any other happiness.”

- James E. Faust, “The Enriching of Marriage,” General Conference, October 1977

https://www.lds.org/general-conference/1977/10/the-enriching-of-marriage?lang=eng

Latter-day Saints should be the best parents

"Our family-centered perspective should make Latter-day Saints strive to be the best parents in the world. It should give us enormous respect for our children, who truly are our spiritual siblings, and it should cause us to devote whatever time is necessary to strengthen our families. Indeed, nothing is more critically connected to happiness—both our own and that of our children—than how well we love and support one another within the family."

- M. Russell Ballard, Of the Quorum of the Twelve Apostles, "What Matters Most Is What Lasts Longest," General Conference, Oct 2005

Evil that used to be localized and covered like a boil is now legalized and paraded like a banner. The most fundamental roots and bulwarks of civilization are questioned or attacked. Nations disavow their religious heritage. Marriage and familyresponsibilities are discarded as impediments to personal indulgence. The movies and magazines and television that shape our attitudes are filled with stories or images that portray the children of God as predatory beasts or, at best, as trivial creations pursuing little more than personal pleasure. And too many of us accept this as entertainment.

"The men and women who made epic sacrifices to combat evil regimes in the past were shaped by values that are disappearing from our public teaching. The good, the true, and the beautiful are being replaced by the no-good, the “whatever,” and the valueless fodder of personal whim. Not surprisingly, many of our youth and adults are caught up in pornography, pagan piercing of body parts, self-serving pleasure pursuits, dishonest behavior, revealing attire, foul language, and degrading sexual indulgence."

- Dallin H. Oaks, "Preparatory for the Second Coming," Ensign, May 2004

https://www.lds.org/ensign/2004/05/preparation-for-the-second-coming.p1?lang=eng

There are only a few places where our influence is irreplaceable

"On a Monday evening not long ago, I was walking past a playground where a young family was choosing up sides for a game. I overheard one of the children call out, “Mom, choose me.” As I walked on, these words rang in my ears. Life in today’s world places a multitude of demands on a woman’s resources of time and energy. We can choose to apply our talents in more arenas than ever before, but there are only a few of those places in which our influence is irreplaceable. I can imagine children the world over saying, “When you decide where to spend the time and the gifts that God has given you, Mom, choose me.” "

- Virginia U. Jensen, "Creating Places of Security," General Conference, Oct 1997

https://www.lds.org/general-conference/1997/10/creating-places-of-security?lang=eng

"In creating a family, we fulfill our greatest purpose on earth."

- Elder D. Todd Christofferson, "Elder Christofferson Counsels Members in Central America," Ensign, Jun 2013, 76

"There is no other organization that can so completely satisfy our need for belonging and provide the resulting happiness that a family can."

- Elder Marlin K. Jensen, of the First Quorum of the Seventy, "Living After the Manner of Happiness," BYU Devotional, September 19, 1995
http://speeches.byu.edu/?act=viewitem&id=719

The family is the building block of society

“The family is the building block of society. It is a nursery, a school, a hospital, a leisure centre, a place of refuge and a place of rest. It encompasses the whole of the society. It fashions our beliefs; it is the preparation for the rest of our life.” 

- Margaret Thatcher, Prime Minister of Great Britain, from the London Times, 26 May 1988. As quoted by Pres. Thomas S. Monson, Second Counselor in the First Presidency, in "Hallmarks of a Happy Home," General Conference, Oct 1988
http://www.lds.org/general-conference/1988/10/hallmarks-of-a-happy-home?lang=eng