Commentary: The Gay Agenda
It seems a number of people, in arguing against marriage equality, believe there is a broader agenda at work here. Leaving aside the untenable logic of the claim that you might oppose a reasonable reform because you fear the next reform will be less than reasonable, I think marriage equality has taken on a symbolic importance in the broader movement toward civil rights for all.
While I believe marriage equality is an important step, as it begins to equalize critical institutions, and gives same-sex partnerships the same legal status of protection that others enjoy, at the same time I believe it might not even be the most important of changes still to be achieved.