Howie and why he has such a boring occupation

In The Mezzanine, we are fed, in detail, Howie's thoughts on everything. It turns out, Howie is a very very interesting man who has many thoughts that he tells us that evoke craziness and give us a glimpse some of his personal life. What I'm wondering is why a man this interesting, ends up with a drab, boring job at some firm in the city. Why isn't Howie a stand-up comedian or a street performer? I think Baker initially gave him this job in order to make a few points. The fact that Howie has such a boring job gives us the opportunity to not think about it as much and be able to focus more on what's inside Howie's brain and what thoughts are going through his head. Another reason Baker gave Howie a drab job was to show that just because someone has a job that isn't the most interesting, it doesn't mean that they are a boring person. We must get to analyze someone deeply and get to know them and their thoughts before judging them.