The point is, marriage was invented to cure the ills of single parenthood. And precisely so that both either the actual creative parents (mom/dad) would be together, or at the very least a mother/father stand-in (adoptive man/wife, grandpa/grandma) for the sake of the childrens' future. In that Rule, all children involved have access to both their own gender as a role model and the opposite one to learn how to interact in an adult social world that contains both.
That's why the Rule was set. And that is its function. No substitutes are acceptable for the Rule.
One of the provisions of the Infant Doctrine regarding children and necessities is that a well rounded social preparation for later life is considered a necessity. Gay marriage by its very structure, destroys half of that foundation 100% of the time. That causes wounds to children and leaves them ill prepared for life. Causing wounds to children or damaging them socially is strictly forbidden in contract law when adults are implicitly involved in contracts with children. So any contract that wounds or damages children is void upon its face without legal challenge.
Any person, persons, judge, tribunal or attorneys seeking to show the world that gay marriage "doesn't harm children and in fact is good for them" has the burden upon them to FIRST demonstrate that beyond a shadow of a doubt (and, good luck with that) BEFORE any revisions to the marriage contract can happen where children are deprived of either a mother or father for life as a binding legal condition.
Each State of the United States is, upon notice herein, required as a matter of law to investigate my claims that gay marriage can wound children psychologically as a matter of binding contract....a contract whose onerous terms the children cannot escape for life. They don't have the luxury of saying "Oh Balderdash!" "Nonsense!" or "Frivolous!". Every State is required by law to err on the side of overkill in this one particular type of law involving children and abuse or neglect.