Unification is required, not optional. Many people say that the Korean economy collapses when reunification takes place. Of course, it will be difficult for North Koreans to adapt to the liberal democracy in South Korea. Unemployment can also soar. Russia wants to connect the railways, and China wants to build spheres and railways. Furthermore, people in North and South Korea share the same ancestors. Many families are in a situation where they can’t meet their family, and this situation needs to be restored. Also, Korea's defense spending budget is 40.3337 trillion won (as of 2017), but if it is used for the welfare of the country after reunification, the level of welfare in Korea will be even better. These are the minor reasons why Korea's unification needs to take action. This being the case, there are generally reasons why Korea needs unification, such as"peace guarantees" and "economic reasons."
First of all, for the first reason, the unification of the two Koreas should take place naturally. South and North Korea are still at war, and we cannot continue this war. In addition, peace can be guaranteed not only to the South Koreans but also to the North Koreans through the unification of the two Koreas. More specifically, it can relieve tensions caused by military risks and make peaceful use of the DMZ. The number of separated families increased rapidly as the two Koreas were divided, which is a big problem. Also, if Korea is reunified, men don't have to force themselves to join the army.
The second reason for unification is economic. First of all, if South and North Korea can eliminate the cost of division. In addition, we can create new values by combining the knowledge and technology of the two Koreas and If reunification is achieved, North Korea will develop many resources, have significant economic benefits, and become an economic powerhouse. It can then expand the domestic market and grow the economy as a whole by increasing the number of people, and it is currently consuming a lot of resources due to the division. If it is unified, it can avoid resource waste and secure new markets, resulting in greater economic growth, as military costs are high due to hostile relations. Based on North Korea's abundant natural products and South Korea's outstanding technology, it is possible to export many good products. As an example of Germany, in the beginning, East Germany's economic power declined because it was reunified, but it has now become the best-living country in Europe. The U.S. military is selling us a lot of military weapons due to the lack of reunification, but the money used for weapons can also be earned.
By those kinds of reasons and evidence, it is beneficial for both North and South Korea when the country is put together. "People should be aware about the problems caused when the country is not united, and should take actions for the reunification.