Why doess the nuclear family exist?

The nuclear family exists as a social structure primarily for economic and emotional support. It allows for a more manageable and focused unit where parents can raise children, providing them with stability and nurturing. Historically, the nuclear family has also facilitated the division of labor, with distinct roles for each member, which can enhance efficiency in household management. Additionally, this structure has been influenced by cultural, economic, and societal changes over time, particularly in industrialized societies.