Haha, this is awesome! It does showcase a beautiful world, though! Imagine if you walk into a department store and they already know if you're the kind of person who likes to be greeted vs left alone to browse. Or using median commuter feeling to make commutes better. We could find unusual things. For instance, maybe people would like trains coloured brightly on average. Who knows! The positive possibilities are endless. We could engineer general contentment for all without drug usage.

EDIT: Since I'm rate limited, here's my response to below comment

People are always engineering your contentment. Stand-up comics, your wife, the people at your favourite coffee shop, the bookstore you visit. It's a good thing. It's the lubricant of society.