But if we just accept this shift, we’re giving up on one of the great ideas of Western civilization: the celebration of lifelong heterosexual monogamy as a unique and indispensable estate. That ideal is still worth honoring, and still worth striving to preserve. And preserving it ultimately requires some public acknowledgment that heterosexual unions and gay relationships are different: similar in emotional commitment, but distinct both in their challenges and their potential fruit.

But based on Judge Walker’s logic — which suggests that any such distinction is bigoted and un-American — I don’t think a society that declares gay marriage to be a fundamental right will be capable of even entertaining this idea.