Then I read in the paper about Yonsei University students demonstrating for this to happen and getting tear gassed by the police. It is inevitable. The sad state of affairs of North Korea will make it so. The economy sucks. Poverty is at an all-time high.
Hunger is rampant.
North Korea will have no choice but to reunite with South Korea. Still, though, it is not public policy to pursue this matter. And students demonstrating for such is not accepted. But you must also understand that the Yonsei incident you mention had the students overtaking and essentially holding the campus hostage. For North Korea, North Koreans, and families separated by the split, yes.