It's pretty silly, of course, as you knew when you posted it.<quoted text>
Gay marriage should not be allowed because marriage is not supposed to be used to avoid paying taxes and to gain benefits. It is not merelt a business arrangement. 2 of the same gender do not provide balance for any adopted children that may be added to lend validity to a defunct relationship that is, by definition, barren and sterile.
Of course, there is no part of marriage law that prevents loveless marriage of convenience, and there are folks who enter in to those - I even know a couple of people who wasted their lives that way. Most people, gay and straight do not, and marry for attraction and love and to form supportive and healthy families.
Now as you know, procreation is not required to obtain a marriage license, and infertile folks and folks who don;t want to have kids legally marry every day, so that part of your post is downright silly.
But marriage IS indeed a good place to raise kids in, and the tens of thousands of kids raised by gay couples benefit in all the same ways as every other kid.
Does this make it a bit easier for you to comprehend?