Eh. I think cheating and divorce rates say more about marriage not being for everyone and people getting married for the wrong reason in the first place. We're all a little bit different from one another, and for some of us, the thought of devoting our entire life to another human being may just not be in the cards.
In other words, it is not overrated for some people (myself included), but for others it is a waste of time and effort that is better spent pursuing a career or learning about underwater basket weaving.