Why is it important to apply finish to woodwork?

Applying finish to woodwork is crucial primarily because it helps protect the wood from various environmental factors and wear. A good finish acts as a barrier that prevents discoloration caused by exposure to sunlight or moisture, which can lead to damage over time. It also keeps the wood safe from fingerprints, which can mar its appearance, and shields it from the effects of dry or damp atmospheres that can cause warping, splitting, or other forms of deterioration.

While enhancing the color and adding a glossy sheen are certainly benefits of applying a finish, those aspects are secondary to the protective qualities it provides. Additionally, finishes do not contribute to the structural integrity of the wood, which is an entirely different consideration relating to the wood's inherent properties and construction techniques rather than its surface treatment. Therefore, the protective function of a finish is the primary reason for its application in woodworking.