It's a burning question for many authors. Helping me answer it is this conviction: My writing isn't all about me.
Whether to blog is a question I've asked myself many times since I published my first novel in 2007, and until now the answer hasn't been a resounding Yes. Readers want stories, I reasoned to myself. They want to get lost in the lives of people whose innermost thoughts and feelings can be revealed safely, in fiction, with no harm or invasion to any living person (except, perhaps, the author).
So why spend my time figuring out how to set up a blog, let alone finding the time necessary to keep the thing alive with post after post? Wouldn't my readers (and wouldn't I) prefer that I spend my time writing fiction?