Plus as has been noted already, the can of worms will be completely emptied in that the Institution won't be limited to just two people, where you'll see unrelenting efforts to legitimize polygamy, polyamory not to mention other deviant lifestyle "desires".
The glowing articles about the fantasy Thai homosexual men three-some wedding, the lesbian “throuple” in the UK, the two lesbians on the West coast who added a guy and advertise it as so great that each baby has both a mommy and daddy.