The worlds are vast and varied, and some stories, well, they'll continue on no matter who the players are.
Madness string 111642
When you think about it, the fundamental bedrock, literally, of worldbuilding is geology. If you know a bit about how landforms are made, how erosion occurs, how landscapes change over time, that will take you a long way to developing and establishing a world that is at least realistic enough to be convincing.