You can't be a decent neighbor if you have no concept of who your neighbors are. You may not be best friends or know their entire life story, but if you can't even recognize them then there is simply no neighborly connection to work with. Without that, they're just people, same as any other found the world over. You can try to be decent to all, but that's not quite the same thing.

OK. Then probably a majority of Americans aren't "decent neighbors" because having no idea who your neighbors are is extremely common.