Nevertheless, in terms of government policy married people (or people in marriage-like situations) can be presumed to be the demographic in which most (statistically, all) children will be begotten. On the other hand, most gay/lesbian unions are not child-bearing. So it would seem to be an injustice against children, for whom most provisions for the married are made, to have benefits spread out to more and more groups claiming equality with the married.
Children are the primary people who grow up and want to get gay married, you know. My lesbian cousin has three children. Two of my gay friends each have one child. I have taken on motherly roles to various children over the years and may want some of my own.
What about all of us? Do our children not deserve the same as others?
When your only argument is for the children, you might want to reconsider. Shall we make alcohol illegal to protect the children? Shall we make pornography illegal to protect the children? Surely these things hurt children more than if their neighbors are legally married!
If you wish to extend the argument into the reductio ad absurdum, as you have, why shouldn't room-mates or dorm-buddies apply for recognition and the state benefits of the married? At least for the term of their rental contract, during which they are bound to live together?
Are they in love? Do they wish to be with each other for the rest of their lives ala marriage vows? Who's stopping them from getting married?
If you found out tomorrow you were sterile, would you vow to not get married? To protect the children which could come from any potential mother's eggs, of course.
You're really not impressing anyone here. I've already had three private messages from people who say you look ridiculous trying to argue these points. One even made note of your fascination with fallacies. I, too, could look up fallacies on Google. Thing is, I actually have things to say. I don't want to avoid debate, I want to debate. Pointing out fallacies is a good way to get around defending your points, but you don't actually have points.
You say marriage is for the purpose of children and imply that anyone who is incapable of having children as a consequence should not get married, but at the same time would deny marriage to gay couples who have or want children. Do you not see the flaws in your own logic here? I'm beyond stunned that you've continued arguing. Like really, I get that INFJs have their weird morality systems, and that's fine and dandy, but we're not arguing from your moral system, we are arguing logical points of view.
The idea that people who can't have kids should not get married is ridiculous. Literally one of the most ridiculous things I have ever heard in my life. Easily up there with those who believe that the Earth is 6,000 years old and man lived with dinosaurs.