Because the real word isn't some blissful reality where "jus b urself" works for a lot of people. There's always the chance that you'll reach the point where being genuine is okay, where you'll have actual friends and a stable enough lifestyle that lets you have some sense of freedom, even if the extent to which you express that freedom is being sad or anxious visibly sometimes. Before you find that chance, though, you may have to fake it until you make it. Keep to yourself, do what's expected, and then go home. It's a way to survive, and not a way to live, but is being a hikkineet forever living, either?