Why do so many members hide their location?

Quite often when I read an interesting post I will click on the user profile icon to see where the poster lives. It's disapponting to see so many people hide all their personal details except for gender.I honestly don't understand why they do this. Surely a city or state and country is not divulging too much personal information?In some cases where people are asking about buying hardware it's esential to know which country they live in so relevant links to retailers can be provided.Could you run a campaign asking people to consider revealing their locations? I know some are paranoid about privacy but they seem to be taking it to extremes by hiding their resident country.Thanks.