i never wrote a chapter because it seemed impossible and presumptuous to write in detail about a subject that so many others already know better than i. it seemed akin to a fourth grader writing a report on puberty, and then presenting it to a bunch of high schoolers.
if you are up to the task, then write the chapter (or was it an entire book?), but i agree with all above that original research is probably viewed more favorably, and is actually easier to do in many cases.