What is the main reason for using wood glue in cabinetry?

Using wood glue in cabinetry is primarily focused on creating a strong, long-lasting bond between pieces of wood. This is crucial because cabinetry needs to withstand various stresses, including weight from items stored inside and potential movement caused by changes in humidity and temperature. A strong bond ensures that joints remain intact over time, contributing to the overall durability and functionality of the cabinetry.

While wood glue does not primarily serve aesthetic purposes, it's important to note that well-bonded joints can enhance the appearance of the finished product, as gaps or misalignments can detract from its look. Similarly, while sealing edges against moisture is a valuable attribute in cabinetry construction, it is not the central function of wood glue itself. Rather, wood glue excels in adhesion, reinforcing structural integrity and ensuring that the joints are robust enough to handle the daily wear and tear associated with cabinetry use. Additionally, increasing weight is not a relevant factor in selecting wood glue, as this material is not designed for that purpose and could negatively affect the balance of a project if sought for that reason.