Blogs are more than just about who, if anyone, reads them.
I write blogs for the few friends who do care what goes on in my life.
I have blogs that advertise websites and I get points & cash for.
I also have blogs set to private just because I feel the need to release some of my thoughts... and some thoughts I don't want other people to read yet need to vent them just the same. Great way to relieve stress/tension.