South Korea has one of the highest suicide rates in the world, more than double that of the United States. According to one recent OECD report, [South] Korea had bucked a trend of falling suicide rates among developed nations, with suicide rising to become the fourth most common cause of death. Unlike most other countries, South Koreans actually become more likely to commit suicide as they age.
South Korea is an extremely wired country, so has a lot to attack. Unfortunately for the South Koreans, North Korea has extremely limited internet connectivity and hence is a target-poor country. Hence, the only option is [conventional] war - or convincing the North Koreans that they can attack them in cyberspace as well.