Conservatives have often opposed the legal approval of gay marriage because, they argue, it will open the door to redefining marriage as basically any kind of relationship (see Mainstreaming Polygamy), in effect diluting marriage to the point where it means nothing.
Now, we can’t blame gay activists for opening the door that all of the others walk through. However, their push for public validation of their illness has led to groups that now want to actually DO AWAY with marriage altogether. Despite the fact that I hate slippery slope arguments, I do think that this is probably an all or nothing battle going on.
A group of liberal intellectuals and activists has released a statement calling for the nation to transcend contentious debates over same-sex marriage and sexuality by, in effect, abolishing marriage as a social norm and institution.