What is the main advantage of using a grinder immediately before brewing?

Using a grinder immediately before brewing coffee significantly enhances the freshness and aroma of the coffee. This is because coffee beans begin to lose their volatile compounds, which contribute to flavor and aroma, shortly after being ground. Grinding the beans just before brewing preserves these qualities, resulting in a more flavorful and aromatic cup of coffee. Freshly ground coffee creates a better extraction during the brewing process, leading to optimal taste and an enjoyable coffee experience. This focus on freshness aligns with the appreciation of high-quality coffee and the desire for the best sensory experience when consuming it.