Future historians of the Granite Mountain Records Vault may also be surprised to find that only heterosexual people married and had children in the early twenty-first century. Within the last two years, a growing series of online complaints have noted that people who want to record marriages of family members who are the same sex cannot because the software won’t record the union. Which is to say, the family tree database won’t allow users to report a marriage unless it takes place between a man and a woman. If this is the only database that survives a catastrophe, it will offer a skewed picture of life in our time. (Multiple requests to Family Search for comment on this issue went unanswered.)
Remember Essie Mae Washington-Williams, the illegitimate daughter of Senator Strom Thurmond? She said, “There are many stories like Sally Hemings and mine. (Hemings, a slave, had children fathered by the United States president Thomas Jefferson.) The unfortunate measure is that not everyone knows about these stories that helped to make America what it is today.” What America is today is a nation in which same-sex marriage has been recognized in more than half the states, Washington, D.C., and nine Native American tribal jurisdictions. The federal government of the United States recognizes gay marriage, as do those of at least nineteen other countries. In the United States alone there are at least 220,000 children being raised by same-sex couples. But if the LDS software won’t register these unions, all those American stories will have been lost, and the database of millions is no longer a real record, because it doesn’t record what’s real.
http://www.newrepublic.com/article/1197 ... on-history
So, if you have gay people in your family who enter into a same sex marriage, they will not be included in your family tree as far as the Church is concerned. Mass murders and child abusers will be included as long as they are either single or married someone of the opposite sex. That's Family Search.