It's only 'unsavory' if you're ignorant of the history and reality of Korea. Korea is a small, culturally and racially homogenous nation that, within living memory, was colonized by a power that attempted to wipe out its ethnic identity. It has no native racial minority groups. The ethnic and cultural unity of the nation is a source of pride for Koreans. You can't expect a nation like this to import millions of immigrants from other cultures.