A whole host of reasons is given in answering this question. Some involve intrinsic rewards, some extrinsic. Some are to do with outside pressures and accountability. Some relate to the satisfaction of writing and its value in aiding thinking. This chapter explores those reasons and the thinking behind them. It also discusses common reasons given for not publishing (or for not writing at all). The chapter ends by raising questions about the benefits and drawbacks of making ones writing public through traditional channels, questions that are revisited later in the book.