Well, when all is said and done, fully developed game worlds sell well. Must be a lot of DMs out there using them...
Now here is a bit of a different kettle of fish. DM's I think are willing to buy lots of setting stuff, because they like to read it. Not that they necessarily use it in their game. I know I used to be like this. Used to buy every supplement I could get my hands on because I liked to read about the setting.
Then I realized that 99% of the material I had, I read once and never used. That's when my attitude towards this sort of thing changed. I used to agree wholeheartedly with a lot of the posters here that if you were going to run a good campaign, you had to do all this background work first. I've got binders and binders of this sort of thing taking up space on my shelves.
Or, rather, I used to.
Look, maybe I'm stating it too strongly, that's fine. I'm just trying to point out that the common wisdom that you have to do this sort of thing isn't quite (IMNSHO) true. That you don't need to spend that much time doing world building before you start a campaign. That the time you spend world building might be better spent (see the conditional there? Everyone happy) in detailing the events of the campaign, rather than on detailing elements that only the DM sees.
The thieves guild that the party never interacts with doesn't matter. Unless you have flowcharts and spreadsheets to calculate how the guild affects business over time, it has zero impact on the campaign, unless the DM or the players make it so.
Again, totally my opinion. It's a bit late and I'm a few beers downrange, so, hey, take it for what it is.
Please don't set up a strawman and deride strawman arguments in consecutive paragraphs.
I'm pretty sure Hussar would detail all those things about Councilor B. He wouldn't do it because it makes a vibrant world tho. I imagine it would go more along the lines of:
It's going to be a story of political intrigue and desperate action. It needs some characters... the king, some councilors, the nobility, some servants, some prominent freemen, some diplomats... let's get those guys detailed. Hmmmm, we'll need to detail the castle, because that's where most of the action is... maybe a quiet tavern on the far side of town where an insider... how about Councilor B... will set up a secret meeting. What's he like? Better have that worked out, he'll be a big mover in this game. Why is he choosing that tavern? Better have those answers...
etc.
There's no way to get everything down, so focus where the biggest needs are.
PS
Bingo. The basic (at least) details of the councilors is going to come up in the game. Any DM who makes the slightest effort knows that that's true. However, in the example of the one councilor's estranged wife, how is that going to come up unless the DM specifically dangles it in front of the players?
Do your players regularly ask if the councilors are having marital difficulties?
Indeed. And all that "campaign building" that's not supposed to be world building? It's all world-building. Think of anything in advance of the players at the table, perhaps while you're own mowing the lawn and thinking about your game? World building.
But no matter how much the DM engages in world building, if the lack of it or poor use of it hurts the game, then it's poor DMing. Plain and simple.
I see what you're saying and by and large I agree. My personal problem, and i realize that this drum is getting a bit worn is that folding world building in with setting construction makes setting meaningless. To me, world building is an activity that is divorced from plot. To me, world building is an activity which is pursued for its own end and its own goals - specifically to create in as great of detail as possible, an imaginary world.
Again, I think this is probably why we're having such a difficulty coming to a consensus because I think a lot of people in this thread are not making a distinction between world building and setting building.
So, if I accept your definition of world building as any activity related to the creation of setting, then yes, we are in 100% agreement.