In a way, I'd like to be more of a writer. So, why don't I write more about the day job?
I put it down to two factors: Privacy is one thing. I deal a lot in specifics, and the more specific you are in terms of an issue or a clinical scenario then the greater the risk that I might say accidentally something which breaches patient confidentiality or corporate confidentiality. I know some bloggers manage decent levels of pseudonymity, however I'm a bit risk-averse on this point.
The other thing is the gap between my everyday and the reader's everyday. It's easy to forget how the things that seem mundane to me might seem exciting to others. Would today's work bore them? I wonder.