I love world building, but the more novels I write and more worlds I end up creating. I find I only use a forth of what I end up making. I have a 6 book series that i've been working on here and there. I did so much world building for this set of novels and I've barely touched most of it. The maps were the most important thing I needed.

There was a cool comment on io9 about GRR Martin and that he only builds what he needs in his world. I like that idea.