Many of us are programmers. Some of us are also trying to be writers. Trust me: writing is like programming. Reading code is very useful to become a better programmer, but you learn programming mostly by writing code. Similarly you mostly learn how to write prose by writing prose, tons of it. Reading is especially useful if you identify certain books that are very high in style (for me one of such books was "Vite di uomini non illustri" by Giuseppe Pontiggia), for your taste at least, for what you beleive the best writing is. You read these books many times, to understand what's going on, what are the patterns, how to do the same magic. As a casual reader you can read 200 books every year and yet remain a terrible writer.
EDIT: more about that on my blog if you care -> http://antirez.com/news/136