Korea traditionally had a family structure called extended [authoritarian] stem family where family members included all their grandparents, aunts, and uncles in number and size. In traditional society, the role structure was strictly divided according to gender and age. After the virtues of Confucianism were imported from China, Korea valued a high patriarchal family structure; Traditionally, the main purpose of marriage was to continue the family lineage by obtaining a male heir. Filial piety, which served as an ideology to maintain one's traditional family model, was a virtuous characteristic; it was believed that it was duty that kept the order not to dishonor the name of ancestors because descendants believed in punishing unfilial behavior and caring for the honorable. The eldest son had the greatest responsibility as he always led the rituals in which they honored the ancestors and took care of his parents after they reached old age, while his wife had the role of producing all the important male heirs. Women's role was limited to the domestic sphere, which sometimes led to sacrifices for the family. Overall, the traditional family system was seen as an unequal relationship in which the son obeyed the father. However, among other factors such as modernization and industrialization, the Asian financial crisis also known as the "IMF era" in 1997 particularly accelerated the shift from extended stem family mode to a very short period of time. and nuclear family mode. Before the crisis, it was common to follow the family structure in a traditional way. Then the IMF fundamentally changed its mind and opinion about the future. However, people started focusing more on their improvement and development for a better life rather than taking care of a family and its responsibilities after broken economies put their plans and dreams on hold. Nowadays, it is rare to find families spanning three generations; it is usually made up of family members from only two generations. Statistics show that the majority of families have only one child and more women play the role of breadwinner; the number of monomer family units increases. Unlike how the nuclear family was seen in the past as a signal of difficulty and disadvantage, the contemporary concept of the nuclear family is generally seen as the result of choosing to give meaning to privacy, wishing not to let its privacy being invaded by others..