In our society we live by such diverse social rules that even people living next door to us can be unwittingly offended by our own beliefs, behaviours and what we find acceptable.
If we were to actually meet aliens from another planet, they could behave in ways that made us think that they wanted to wage war against us; they may not be able to understand our culture enough in order to be polite. If they went around killing people, would we be expected to assume it was a social faux par and that it wasn’t a deliberate act of war or aggression? How many should we allow them to "accidentally" kill in the name of diplomacy?
This is an extreme example to illustrate some people's reactions to an idea which is alien to many of them: non-gender-specific marriage.
When two people think that they will be a good family they should be able to go to the government and say, "We are going to be a good and loving family. We may or may not raise children. We may or may not have children. If we do, though, we will love them dearly."
The government in response will then say, "Go for it! Become the fabric of our society. Strengthen our society by being a good family and by being people who love each other and who will love their children. It is not our right to know what is in your pants or dress. It is not the media's right to know and it is not your neighbour's right.
If you think that you will be a good family, then the government will stand by you and will give you every opportunity to make it work and to make it good."
A person's gender or what they do with it is not the government's business.
Gender should be removed from marriage applications, certificates and records.
Loving people make great families and great citizens, regardless of their private preferences.
Now it is time for the secular government of our society to acknowledge it.