Light covers the subject evenly, allowing consistently good exposures.
Colors appear rich and saturated when frontlit on a sunny day.
This lighting also excels at capturing detail in a subject. Light that comes from the side produces shadows, which help define shapes and forms within a picture. The more prominent shadows are, the greater feeling of depth your pictures will convey. Sidelighting also reveals texture, as the light skims across a surface. You won't see shadows like these at noon, when the sun is directly overhead.