Spot on, apps have optimized our lives... to local maxima. Apps can't guide us to peak happiness because the best is disconnected from the rest.

Even when it comes to something as "simple" as music, I've never found a "favorite" band through something like Spotify. Good music, sure, but the "bar raisers" alway comes from randomness - radio, odd bar show, personal recommendation, cabbie's CD player, etc.