I don't think the problem is people can't be alone with their thoughts. I think people know that essentially all our lives are mundane. But that's not what we want to look like. We want to do things, or at least look like we are doing things. And to be alone and sitting in a room is not something you can broadcast to the world, or even explain to most people. When we seek to please no one but ourselves, being alone is actually rather fun.