what to write in a "blog

This is a test to see what would flow from my fingertips if I were to start writing a blog on a semi-regular basis. While it is my question as to what I would write, it is also my question as to who would read a blog written by me. Do I have anything to write that others would want to read? Why would I consider my written words to be of any use. What pride it must take for an individual to begin to write a blog. How does a person go from no blog to having a regular blog? What do you do if no one follows your blog? Do you keep writting or do you cease writing and come to the realization that no one really cares about what you have to write in a blog.