Why is Broad-Minded a Quirk?

[Ragitsu]

Originally Posted by Brett

In the vast majority of human societies, no, it is and has been considered bad and dangerous to associate with foreigners. A comparatively small number of modern progressives suppose that it ought to be considered virtuous, but they are few enough, even today.

*scratches head* That doesn't account for cultural diversity in countries where a significant portion of the citizens are the children or grandchildren of fairly recent immigrants. Are you saying this negative aspect of Broad-Minded would not come up in campaigns set within a single country/state, unless the PC is constantly encountering "foreigners"?