I plan to write another, more deeply engaged post later – perhaps also about world building – but for now, here is an interesting article discussing the question:
To world build, or not to world build?
Darn it, here’s another one! This one explores Tolkien’s world building in particular, how it intimidates us, and how, when you really look at it, it’s simpler than it seems. We can do it, too! (Other than inventing an entirely new, speak-able language, that is…)
And a funny one!