Even if no one but you reads it. The blog you write each day is the blog you need the most. It’s a compass and a mirror, a chance to put a stake in the ground and refine your thoughts.
Although some may argue that writing is meant to be shared with everyone, I’m also a firm believer that writing at it’s core is more for you even if you don’t realize it at the beginning. What matters is that it’s for you and you don’t need to impress anyone. Seth Godin knows this more than anyone.