Argument: Gay marriage is a stable economic partnership
Ted Olson. "The conservative case for gay marriage." Newsweek. January 12, 2010: "Marriage is one of the basic building blocks of our neighborhoods and our nation. At its best, it is a stable bond between two individuals who work to create a loving household and a social and economic partnership. We encourage couples to marry because the commitments they make to one another provide benefits not only to themselves but also to their families and communities. Marriage requires thinking beyond one's own needs. It transforms two individuals into a union based on shared aspirations, and in doing so establishes a formal investment in the well-being of society."
"Let them wed." Economist. January 4th, 1996: "It is true that the single most important reason society cares about marriage is for the sake of children. But society's stake in stable, long-term partnerships hardly ends there. Marriage remains an economic bulwark. Single people (especially women) are economically vulnerable, and much more likely to fall into the arms of the welfare state. Furthermore, they call sooner upon public support when they need care—and, indeed, are likelier to fall ill (married people, the numbers show, are not only happier but considerably healthier). Not least important, marriage is a great social stabiliser of men."