No fallacy, and nothing misconstrued.<quoted text>
Here is the fallacy in your argument...
You say, "Which brings us to the life-giving result of a man and woman UNITED IN MARRIAGE reaching into the future." (emphasis added)
The truth is that "marriage" is not key in producing offspring. As you and I both know, marriage is a manmade construct that has not been around since the beginning of mankind.
"Anatomically modern humans evolved from archaic Homo sapiens in the Middle Paleolithic, about 200,000 years ago."
"The first recorded evidence of marriage ceremonies uniting one woman and one man dates from about 2350 B.C., in Mesopotamia."
You can see that humans were creating offspring LONG BEFORE marriage came into existence.
In the modern world, we often see children born "out of wedlock".
You misconstrue "mating" as "marriage".
If all of a sudden legal marriage were to be removed from our culture, "mating" would still continue. Children would continue to be born.
In this day and age, people marry for many reasons; one of which is to raise a family. There is no one, singular, universal reason for all marriages.
You always jump the tracks when you confuse marriage and mating. We try to bring you back to the discussion at hand, but you have a death-grip on your "marriage equals mating and offspring" argument.
If you continue to do this, no one will take you seriously. Many of us already know that you are purposefully being misleading because of your agendas.
Don't continue to be a loser.
I have always acknowledged the distinction between evolutionary mating behavior and marriage. In fact, YOU are the one who feigned ignorance about it. I accurately note that the cross cultural social construct of marriage effectively enhances the health and safety of procreation.
But this false rabbit trail ignores the fact that marriage connects the past and future of humanity. SS couples do neither.