Blog?

Should I write a blog? It doesn't seem like many people would read it. What would be its purpose? I made my first web page, (here) by teaching myself from the W3 schools website in order to learn html, xhtml, Java script, and W3C standards. So now I know how to make a page, but I found hosting and dynamic updating difficult so maybe blogger will make it easier to not just have a static page, but something dynamic and with content people would want to visit. The purpose of this blog would be to entertain and enlighten. Topics might include physics, astronomy, science, news coverage of science, computer science, politics, design, architecture, technology, philosophy, music, and just generally what I am up too.