If you're in a troubled marriage, divorce might seem like a reasonable option. But in most cases, it's a calamity. Shows like Bravo's Girlfriends' Guide to Divorce and HBO's Divorce normalize the dissolution of marriage, making couples feel that divorce can be a happy new beginning. Celebrities suggest a norm that divorce is not only acceptable but advisable. Gwyneth Paltrow's "conscious uncoupling" makes divorce seem trendy and enlightened...