Probably because most people don't really believe these studies (assuming they've heard of them). I'm very doubtful of them myself. It really just-so happens t

Probably because most people don't really believe these studies (assuming they've heard of them). I'm very doubtful of them myself. It really just-so happens that the standard US workweek is the exact perfect amount? That sounds incredibly unlikely. And this is a hard thing to study, too. Moreover, anecdotally, I know plenty of people that work more hours than this, effectively (and also some that work less!).