Even though the show wasn't very much like the books, I quite enjoyed The Dresden Files. But why was the show cancelled?
...it's official: The show isn't returning for a second season.
A shame, but hardly a surprise, given the reticence to discuss the matter every time I brought it up to Sci Fi or NBC Universal Cable execs during the recent TCA press tour. In their world, it's all about "running the numbers" (in other words: looking at the ratings and budgets, etc.) and to them, Dresden just didn't seem to measure up.
The show was cancelled because the built-in fan base found out in the first episode that it bore only the slightest resemblance to the fantastic books. This meant that it had to compete with every other show airing at the time to draw eyes, and it just wasn't that special. Had the producers actually made The Dresden Files, it would have been able to tap into the many many people who love the books.