Ryan Anderson, co-author of What is Marriage? One Man, One Woman: A Defense writes in Ricochet:

"As the Ricochet editors mentioned, tomorrow Encounter Books releases my new book, co-authored with Sherif Girgis and Robert P. George, What Is Marriage? Man and Woman: A Defense. So while blogging at Ricochet this week, I thought I’d explore some of the issues raised by the book—and recent events, thanks to the Supreme Court. Today I’d like to situate the debate over the definition of marriage within its proper context. 

Some people wonder why conservatives choose to focus exclusively on same-sex marriage. The answer is simple: We don’t. First, conservatives always did—and still do—make other social and political efforts to strengthen the marriage culture. The push for same-sex marriage was brought to us. Second, now that this is the live debate, we can’t ignore it, for its outcome will have wider effects on the marriage culture that really is our main concern.

Long before there was a debate about same-sex marriage, there was a debate about marriage. It launched a “marriage movement,” to explain why marriage was good for the men and women who were faithful to its demands, and for the children they reared."