Anyway, didn't Kim Jong-un study in Switzerland or something like that? How come he doesn't know English?
Or to take a less extreme example than this (in some ways), Ed Snowden might make good money on the speaking circuit, but even then, would any of us envy being effectively exiled from our home, never allowed to return?
Adapting to a new place or a new culture can be psychologically hard even when you want to do it.
Exile or imprisonment is pretty cruel under any circumstances.
There is a book by an actress that got kidnapped and had to make films for Kim Jong Il with her also kidnapped divorced husband. Not a good life.