In a High I.Q. Country
My last impression of the U.S.A. was the T.S.A., minimum wage room temperature I.Q. incompetents with badges; my first impression of Korea was her competent, efficient, polite immigration officials. And that competency, efficiency, and politeness is found in all of the service-workers one encounters in this largely homogeneous society.
To get married and thus reproduce in this country, the bar has always been set much higher than it has been back home, where there now is no bar. Centuries of this kind of human husbandry have paid off.