Brian Reynolds Myers — American Author born on December 30, 1963,

Brian Reynolds "B.R." Myers is an American journalist and associate professor of international studies at Dongseo University in Busan, South Korea, best known for his writings on North Korean propaganda. He is a contributing editor for The Atlantic and an opinion columnist for the New York Times and Wall Street Journal. Myers is the author of Han Sǒrya and North Korean Literature, A Reader's Manifesto, and The Cleanest Race... (wikipedia)

That's a mistake I think that a lot of Western observers make is to assume that Korean nationalism is hundreds if not thousands of years old. When in fact nationalism is incompatible with Korean Confucian tradition.
If South Korea is going to survive, and keep the peace on the peninsula, its citizens need to start conveying support for their state.
Even North Korean people who are not necessarily happy with economic policies are still loyal to the state itself. It's a military-first state, so whether it does very well on the economic front or not, is not central to public support for it.
North Korea not only wants unification, it absolutely has to have unification. That's really the only way this state can feel secure.
People tend to overlook the fact that North Korea's economy collapsed at about the same time as South Koreans lost faith in their own state. The late 1980s and early 1990s were a time when South Koreans were questioning the very legitimacy of their republic.