"gay marriage" and heterosexual divorce

This is one of the key problems with Christian activism in the arena of so-called "gay marriage": Since we have done so little with a far larger problem (quantitatively and ethically) like divorce, then we have lost most of our moral authority to speak on a smaller problem in the same arena.

Jon Moseley speaks to a related point in his letter to the editor of Touchstone:

We publicly oppose gay marriage on the grounds that a child needs a mother and a father, and then often ignore the needs of children suffering from divorce. How could we be more hypocritical?