Americans love to tout the value of waiting until marriage to have sex. We teach abstinence-only education in schools across the country, and even comprehensive sex-ed programs often point out that "abstinence is best." Pop stars from Britney Spears to Jessica Simpson, to the Jonas Brothers, to Miley Cyrus, to Justin Bieber routinely assert that they're waiting 'til marriage – putting them into the Good Role Model category (at least, until someone leaks a sex tape). There's a booming "purity industry", complete with jewelry, elaborate events, books, t-shirts and DVDs.

Our state and federal tax dollars have long been spent promoting "chastity". While conservative commentators are happy to assert that waiting until marriage is the best choice for everyone and people who don't wait aren't doing marriage "the right way", sex-positive liberals hesitate to say that having sex before marriage is an equally valid – if not better – choice for nearly everyone.

So here it goes: having sex before marriage is the best choice for nearly everyone.

How do I know? Well, first of all, nearly everyone has sex before marriage – 95% of Americans don't wait until their wedding night. And that's a longstanding American value. Even among folks in my grandparents' generation, nine out of ten of them had sex before they wed.

Of course, just because lots of people do a thing doesn't mean it's a good thing. But sex is. In terms of happiness, sex is better than money, and having sex once a week instead of once a month is the "happiness equivalent" of an extra $50,000 a year. People with active sex lives live longer. Sex releases stress, boosts immunities, helps you sleep and is heart-healthy.