Of course there is a good reason for it and aerospace engineers know what it is. A dimpled golf ball creates turbulence in the air as it flies. This reduces drag compared to a smooth ball. A properly dimpled ball might go 250 yards on a drive, while an equivalent smooth ball might only go about 120 yards. Read more about how an aerospace engineer plays a key role in golf ball design .
Golf clubs are really an engineer's paradise as well.
Most people are not very good golfers and would rather buy equipment that improves their game instead of putting in extra practice time. Materials engineers are busy designing the latest super light weight graphite shafts and the most responsive exotic metal club heads. Mechanical engineers are designing the shape of the club heads to maximize power transferred to the ball even when the hit is not at the center of the sweet spot. Think about your favorite piece of sports equipment.