Professor Schaff responds to my comments, and as he has yet to follow my lead and allow comments, I reply here.
Prof. Blanchard does not find my argument in favor of traditional marriage convincing. The question is not whether it is entirely convincing, but whether it is reasonable, which is the only point I was making (see the argument's juxtaposition with the comments of Frank Rich, et. al.).
To the contrary, I think I said that I agreed with his argument in favor of traditional marriage. I certainly found it reasonable. I just didn't think that it amounted to a successful argument against gay marriage.
I endorsed his distinction between marriage as a set of mutual obligations and marriage as a set of claims for self-satisfaction (my terms), as well as his preference for the former. I think that he thinks that the battle against gay marriage is a losing one, and I think he is right. But we can still insist that marriage be about serving others rather than about what's in it for me.