It's liberating to say whatever you want, even if no one reads it. How dare someone discovers you! At the same time, there's a fear that what's written isn't polished enough to be published.
But that's what blogs are: rough drafts. They're good enough to get started.
Blogs are the blank piece of paper, a sandbox where people work out ideas. They are full of contradictions and imperfections.
The fear is that your words may be wrong or misunderstood. No one likes to be called out. But that's also part of the excitement—
Bloggers are already naked. They can even blog in their underwear. Bloggers notice and give other people something to chew on and discuss. They provide a spark, not the answer.
Bloggers raise their hand before they are ready. They pick themselves, professionals, past success, or not. They have a long-term willingness to figure it out all out and mix and mash the world of ideas even if only a handful of people notice.