In the Preface of Selfish Reasons to Have More Kids, should I explicitly address the question, “Why would an economist write this book?”?

Pro: I could talk about how I come out of GMU’s wide-ranging, inter-disciplinary, blog-friendly approach to econ.  It’s an engaging story.

Con: Get to the point.  Focus on the message, not the messenger.

P.S. Non-economists might ask, “Why would an economist write this book?”  Economists, in contrast, might ask, “Why would an economist write this book?”  My response to my fellow economists: Selfish Reasons to Have More Kids is behavioral economics of the family.  I treat standard Beckerian analysis as normative, and advise parents to revise their behavior to fit the theory.