1) Koreans repairing your house and talking with you is more impressive than a cafe named after a city.
I think, you are more concerned with "big" international games, or you would see that.
2) Russia, America and China can devastate the world (China doesn't have such nuclear stockpiles as Russia and America, but they could have them if they wished).
Korea is only a threat to itself.
3) It is a stalemate for 72 years, since 2 countries mentioned in #2 splitted Korean peninsula apart.
If you can propose a way out of the situation....
But well, call them 'good people', or 'bad people', it is still a stalemate. It is not a very good thing for Koreans to live in. And for other countries... Look, when 70 countries will have nukes, their use in conflicts will become routineous.