Why not legalize same-sex marriage? Who could it possibly hurt? Children and the rest of society. That’s the conclusion of David Blankenhorn, who is anything but an anti-gay “bigot.” He is a life-long, pro-gay, liberal democrat who disagrees with the Bible’s prohibitions against homosexual behavior. Despite this, Blankenhorn makes a powerful case against Same-Sex marriage in his book, The Future of Marriage. He writes, “Across history and cultures . . . marriage’s single most fundamental idea is that every child needs a mother and a father. Changing marriage to accommodate same-sex couples would nullify this principle in culture and in...