"Every married couple has a prenup, whether they want one or not. The laws covering marriage and divorce in every state are nothing more and nothing less than premarital agreements. So the question is not whether you should have a prenup, but whether you want your state’s default version of one."
Another way to say that is: If you don't want a pre-nup, you don't want marriage. Which is not the same thing as saying: "If You Want a Prenup, You Don’t Want Marriage."