From the invaluable Ryan Anderson:
http://dailysignal.com/2015/08/22/its-not-hypocritical-to-let-infertile-couples-marry-but-oppose-gay-marriage-heres-why/?utm_source=heritagefoundation&utm_medium=email&utm_campaign=morningbell&mkt_tok=3RkMMJWWfF9wsRohvq3OZKXonjHpfsX56e4sXaGwlMI%2F0ER3fOvrPUfGjI4ATMpnMK%2BTFAwTG5toziV8R7jHKM1t0sEQWBHm