We write in ways that, we generally hope, reflect real life, or at least look familiar to humans. And in life, recurring themes are a recurring theme. We never quite conquer a pet vice or a relationship pattern or a communication habit. We're haunted by our particular demons.
Is it good, bad, or neutral to recognize thematic patterns in your own work? When it comes to recurring themes, I'm of the mind that knowledge is probably not power, at least in terms of the work.
I tend to describe recurring themes as being part of a writer's DNA - something so deeply embedded in us that even we don't notice it until we've written three or four books.