I started reading the Harry Potter books a few weeks ago in an attempt to read all the books before the first part of the final film, Harry Potter and the Deathly Hallows Pt. 1, is released on November 19th. I'm only on the fourth book, so my chances are pretty slim I'll meet my goal. But even as I read the first book, I immediately wondered why Hogwarts would even have a Slytherin House in the school since most of those students go into the Dark Arts. In the above scene, Harry has the same question and decides a much easier path for himself.