Ground Rules

Sports. Music. "My Life". Blah blah blah. It's all the same. Am I supposed to write to a niche crowd? Am I supposed to have a certain topic that I consistently write about? Am I knowledgable enough about something to even do that? What are the rules here? Are there rules? Why are you asking so many questions? Is this manly? Is this femmy? Is this "getting in touch with my sensitive side? Is this me embracing my feelings about things? Is it totally normal for a single dude to "blog"? There should be established ground rules. It would make this a whole lot easier.