I like Paizo's kitchen sink approach to Golarion. Use what you want, don't use what you don't want to use. There always seems to be something of interest even in regions that I might not otherwise be attracted to.
I also find Golarion far more interesting than other professionally published game worlds (i.e. Forgotten Realms).
As for Numeria, I'm a long time fan of Tekumel... so no problem there.
