Gregg Easterbrook, in this TNR article, anticipates a backlash against gay marriage coming from single persons:
Easterbrook still supports gay marriage, he's just urging less reliance on the argument that gay persons deserve the various financial benefits available to married persons. But is he really right that singles will complain? He seems to think they are likely to make a lot of noise because they are such a huge group, but they haven't complained much so far about the benefits given to the married, and the sheer size of the group compared to the number of homosexuals who want to get married means that the cost of new benefits will be spread out so much that it won't be noticed. And even aside from that, why assume that the cost of the new benefits won't be offset by savings elsewhere? Even if gay married persons receive some new benefits, they may become happier, more stable, more productive citizens so that the net effect on the community is positive.
[F]or every gay or lesbian pair who weds, winning benefits, a couple of single people must be taxed more to fund these benefits. Benefits can't just be demanded; someone must provide them. Marriage benefits for gays and lesbians will not come from the pockets of those in traditional one-man-one-woman unions. The benefits will come from the pockets of the single....
A utilitarian might care more about the denial of privileges to the unmarried, than to gays who wish to wed, simply because the numbers in the former category are so much larger. At any rate, complaints from the single seem the next logical progression of this debate, and complaints from the single are going to be hard to rebut.
Easterbrook still supports gay marriage, he's just urging less reliance on the argument that gay persons deserve the various financial benefits available to married persons. But is he really right that singles will complain? He seems to think they are likely to make a lot of noise because they are such a huge group, but they haven't complained much so far about the benefits given to the married, and the sheer size of the group compared to the number of homosexuals who want to get married means that the cost of new benefits will be spread out so much that it won't be noticed. And even aside from that, why assume that the cost of the new benefits won't be offset by savings elsewhere? Even if gay married persons receive some new benefits, they may become happier, more stable, more productive citizens so that the net effect on the community is positive.