The point of philosophy is to discover answers to questions. Such as how does the mind work? Is there a mind? What is the right action in a given situation? How do we know we know something? etc. This is not even remotely related to the goals and reasons for art, literature, and film, which exist for aesthetic enjoyment. My point is that for answering most of the questions philosophy tries to answer the best method is the scientific method and its framework of approach.
Philosophy (or parts of it, anyway) studies why this isn't actually a desirable approach for most of us.
Aestehtics is decidedly NOT the goal and reason for art. At best it's the scheme by which art keeps getting funded, but art has always been inextricably linked with ethics, politics, and the human experience. Reducing all art to "things that are pretty" is... reductive.