There's something inherently more appealing about the idea that you could reveal and tell stories about characters over the course of a TV season - 13 or 26 episodes, whatever it might be - than in the course of one two-hour movie. You can do so many more novelistic kinds of things on a TV show - with time, with gradual development of relationships, and so on - than you could possibly do in a movie. And that is very appealing.
