Writing is entertainment. What good is the best written book if no one wants to read it? So, while I'd like to say quality should be the most important aspect of the craft, it is not. What is success? If people are entertained, it's a success. A force awakens was considered entertaining despite lacking any creativity at all. I would consider it a success, regardless of the number of people that looked down their noses at it. It's like art. I don't need some snooty critic to tell me what's a great painting, if I like it, I consider it good.