/lit/ - Literature

To me, it depends on context. If I'm talking to a friend, or listening to someone speak on the radio or on TV, I don't care too much. If I'm reading a book, however, that changes. With writing a book comes the implication that you at least understand the medium you are using to communicate. Part of it is also about aesthetics. It just looks nice when I'm reading from someone who seems to know how to write.

It should also be noted that you can understand the 'rules' and still break them. Some of the greatest artists of the last century were later recognized as pioneers for doing exactly that. The problem comes when you don't understand the rules and break them out of ignorance that they even exist.