Knight, this is an honest question, not snark*: is Generica, the Land of I Don't Care synonymous with Golarion, or does it also include 3pp?
I'm just curious because RDM42 mentioned published settings being treated as sacrosanct as compared to homebrew settings, but I think that sort of gets it wrong, no insult to RDM. Published settings are required to include all of said publisher's material, so I see them as a lot less sacrosanct, actually. Just using Paizo material, you can play a Clint Eastwood Man with No Name type from Alkenstar who ends up adventuring alongside an Inuyasha type party in Tian Xia, but no GM should be required to do that in a homebrew setting.
*I suppose the snark would have been directed at Paizo, not you, in any case. ;)
Ah, no, not at all. Generica -- it doesn't actually have a name -- is basically a world that I don't care about, that I've invested little if any time creating backstory for and so on.
In contrast, some of my homebrew worlds have existed for going on thirty years, with ongoing stories and plots and the like, fleshed out NPCs and family trees and all that jazz.
Generica, for lack of a better name, includes none of that. I might use Greyhawk, or Golarion, or another created and published system but more often than not it would be a very generic fantasy setting world with little work put into it. The sort where the map might be drawn on a napkin with a scale that varies depending on the day.
I don't use Generica much because most of my players are looking to continue the threads they've started or heard about in the other worlds. I use Generica when people just want to bash things without worrying overly much about story, cannot agree what they want to do (half want pirates, two others want noble intrigue, and another wants to punt goblins), or for one or two off sessions where people want to create characters they don't have to care about, or introduce new people to the mechanics and general idea of the game without...
I love the name, Generica, I run tons of games like that with out a real term how to call it. I also have games where we have setting were there is history we've created.