Charcoal grilling provides a unique flavor to food due to the smoke and char that is created during the cooking process. The high heat from the charcoal also creates a crispy exterior while keeping the interior moist and tender. This combination of flavor and texture is highly desirable to many people.
On the other hand, microwaving heats food quickly and evenly, but it does not create the same smoky flavor or crispy texture as charcoal grilling. Microwaving can also cause some foods to become rubbery or dry.
Ultimately, the taste preference between charcoal grilling and microwaving is subjective and depends on personal preference.