I know literary criticism is about as popular as Windows ME here, but reading good examples of it can be as enjoyable as the text itself(1). Of course there's always the question of how much authority the critic has -- but it's kind of like having someone with a lot of expertise explain the Linux kernal to you, even if it's not Linus.
To your last point -- I feel bad for you if those are the kind of books you had to read in high school. What were they?
(1) If you want to know what I'm talking about, try the Viking Critical Edition of Don Delillo's 'White Noise'. It has examples of criticism both of the kind I'm talking about and the kind that pg and others rightly mock.