There are several benefits to using a mouse pad, both for functionality and comfort:
Improved Tracking: A smooth and consistent surface can improve the tracking performance of your mouse sensor, especially for optical mice. Optical mice use light to track movement, and a textured surface like a desk can interfere with the sensor's ability to precisely detect motion. A mouse pad provides a more uniform surface for the sensor to track on, leading to smoother and more accurate cursor control.
Increased Comfort: Using a mouse pad can provide a more comfortable surface for your hand and wrist to rest on while using the mouse. This can help reduce strain and fatigue, especially during extended periods of computer use. Some mouse pads are ergonomically designed with gel or memory foam padding for added comfort and wrist support.
Protection for Your Desk: A mouse pad can help protect your desk surface from scratches and wear caused by the constant rubbing of the mouse. This can be especially important for delicate surfaces like wood or glass.