Political Science major Ryan Normandin at M.I.T. writes in their student newspaper The Tech:

It is unfortunate that there is such a growing stigma attached to arguing against gay marriage — at least here in the liberal bastion that is Massachusetts. If one is opposed to legalizing gay marriage, it is automatically assumed that the opposition rests on a basis of hate, homophobia, or other such negative motivations. There are, in fact, legitimate, substantive reasons as to why gay marriage should not be legalized.

... Same-sex couples are unable to procreate, meaning that there is no compelling interest to subsidize their marriages. At this point, many would argue that the happiness of same-sex couples would be enhanced by gay marriage, thus providing a compelling interest. This, in fact, is not the case. The government has already shown through prohibiting certain types of marriage that it does not view enhanced happiness as a compelling enough interest to encourage marriage of any kind. After all, if “enhanced happiness” was a compelling interest, it could be used to justify government subsidization of chocolate, which is proven to increase happiness through the release of certain endorphins. In fact, one could argue that the government should subsidize anything and everything that makes someone happy. Thus, “enhanced happiness” can clearly not be considered a compelling enough interest to justify the recognition and, therefore, subsidization of gay marriage.