John Artz gives some thoughts on blogging:
I think there is great value in writing a blog even if nobody every reads it. About a decade ago, I started a daily journal in which I would write every morning. My goal was to write around 500 – 1000 words a day. It was great writing practice and I think my writing is much stronger today as a result. But, there were further benefits beyond writing practice. Writing every morning sharpened my thinking and helped me organize my thoughts. So, I am also a much more organized and disciplined thinker today as a result. So writing everyday or even a couple times a week had merit.