The change has been revolutionary…Marriage used to be a public institution for the common good, and now it is a private arrangement for the satisfaction of individuals. Marriage used to be about us, but now it is about me.
But ironically, this newer view of marriage actually puts a crushing burden of expectation on marriage and on spouses in a way that more traditional understandings never did. And it leaves us desperately trapped between unrealistic longings for and terrible fears about marriage.

Tim Keller, The Meaning of Marriage