Jonathan V. Last describes the “bait-and-switch strategy” of those attempting to redefine the institution of marriage in The Weekly Standard:
“Of course, not everyone in the same-sex marriage movement wants to help traditional marriage evolve into something better. Some want to burn it to the ground. Again in the New Republic, for instance, one member of a married lesbian couple wrote about her quest to use her own brother’s sperm to impregnate her wife. Why would she seek to do such a thing? Because ‘The queer parts of me relished the way it unsettled people. Uprooting convention, collapsing categories, reframing and reassigning blood relations was a subversive wet dream.’ This is quite intentionally not, as Andrew Sullivan once promised, a “virtually normal” view of marriage.”
http://m.weeklystandard.com/articles/you-will-be-assimilated_969581.html?page=1