I strongly disagree, though I'm not a writer, so I'll just give you another quote (from "On Writing Well" by William Zinsser):

  Soon after you confront the matter of preserving your identity, another question will occur to you: “Who am I writing for?”
  It’s a fundamental question, and it has a fundamental answer: You are writing for yourself. Don’t try to visualize the great mass audience. There is no such audience—every reader is a different person. Don’t try to guess what sort of thing editors want to publish or what you think the country is in a mood to read. Editors and readers don’t know what they want to read until they read it. Besides, they’re always looking for something new.