Why blog?

With the bloging revolution is full swing what is the use of a weblog. When there are so many people consumed with their own appreciations of life, the universe and everything what difference does it make if I add my own musings? Well, it helps if it only helps me! It is a way of self expression in a public domain. If a graffiti artist expresses themselves in the subway. If a pirate radio operator expresses themselves through the airwaves. If a computer tech expresses themselves through developing a website. Then I express my creativitity and destructivity through ploughing a furrow in a blog that may, or may not grab attention or interest. Why blog? Is it for me or for you. You decide.