The following post is my personal opinion and does not reflect any official statements from The Church of Jesus Christ of Latter-Day Saints.
When I was on my mission in Hungary, I saw many breath taking castles. I marveled at the sheer number of these massive structures, all built strategically on hill tops or with high walls and strong doors; making them impenetrable to outside forces. A direct attack on such a fortress would have been futile; yet, each of them now stands abandoned and crumbling.
The question of how defeat found its way into these unyielding fortresses, foreshadows eerily the current attack on marriage and the family.
Marriage is also a castle. The adversary has no greater objective in this life than to destroy the fortress that houses the family unit. But he has no intention of trying a direct frontal assault on marriage because the "baby boomer" generation clings to a solid understanding of marriage and its importance; spiritually as well as in society. The way you defeat a castle, is to convince the next generation not to live there. So, he marginalizes marriage with immorality and redefines it in the eyes of the next generation. Then he waits patiently while generations "X, Y and Z" abandon it into extinction.
In September 2013 Steve Young's wife spoke as an advocate at a gay, lesbian, bisexual and transgender community event. She said to them, "One of the most beautiful things about this church is that it can evolve. It may not go as fast as everyone wants, but it is evolving."
The way you can recognize someone that does not understand this issue as it relates to our religion is that they think we are just waiting for an outdated church leadership to come into the now.
Set aside the cataclysmic consequences to society and only consider this issue from a spiritual perspective. The reality of such a change would mean that we would have to dismantle the temples and discontinue our belief in eternal marriages.
Our existence here is a similitude or foreshadowing of the lives that will come in the eternities. A dry run. A chance to show that we can be endowed with greater power in the next life because we learned to control the power we have on loan in this life. Specifically to this topic, the power of pro-creation here will become the power of creation in the next life.
The scientific definition of life states that in order to classify something as a living thing it must be able to reproduce. The Liger (a mix between a Lion and a Tiger) is a perfect example. It is a beautiful creature but will never be classified as a species because two Ligers cannot mate and make a baby Liger. Its not a matter of belief, its a law of nature.
Temple marriage is not just a ceremony or a commitment, the sealing power creates a living bond for time and all eternity; worlds without end in the next life.
Simple logic then dictates that a same-sex temple marriage would be an eternal prison sentence; condemning the couple to spend the rest of eternity unable to participate in the greatest
and only joy there is in eternity: creation of life.
Those who wait for church doctrine regarding marriage to change, do so in vain. None the less; traditional marriage will be increasingly seen as a crumbling and outdated castle in the eyes of the forthcoming generations, including some who are members of the Church. Once marriage is officially redefined at the state houses, our eternal temple marriages will be seen as prejudicial and out dated and temples will become the new focus of this movement in an attempt to force us to perform same-sex eternal marriages.
1 Corinthians 2:14
But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.