Angela Duckworth: Why are we having less sex than we used to? Stephen Dubner: I think even masturbation is down. And now it's time for everyone's favorite of the Seven Deadly Sins, which is lust. This product does not intend to diagnose, treat, cure or prevent any disease.
Are we too busy watching Friends? Is porn driving us apart? And why did New Yorkers stop vacationing in the Catskills?
Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/