I have a friend who is very deep. One of the deepest people I know. But he is also very unhappy. If he weren't so deep - he wouldn't be so unhappy. That is clear to me. It is his penetrating insight into life and people in all of their poses, fakeness and superficiality that makes him so unhappy.
Everything has two sides. Being superficial isn't such a great quality but it allows someone to live life without getting too down on things. Being a profound thinker is great but is has its downside. How did Koheles put it? יוסף דעת יוסף מכאוב!