That's a foolish question. Does Great Literature Make Us Better? Who cares?
Writers, like talkers, like to tell stories, and most people enjoy well-told stories. A well-told story is a wonderful thing in life, especially because most of our lives are made of humdrum stories - at least on the surface. The most revelatory stories can be touchstones for a life, eg the Bible stories.
Gerard posted a snippet of the best-told story in American history. It won't make you "good", but it's at least as rich as sausage gravy. I should say, as rich as spermaceti.