Because the most important issue when selling a product is its design. Very often, when customers purchase products, they base their choice on the packaging rather than the contents. Psychologically speaking, attractive images immediately convey the notion of high-quality content. We can see examples of this concept everywhere: think of the car industry, where aesthetics are paramount, or the enormous interest that novel cell phone or tablet designs can generate. In the movie industry, films with computer graphics and realistic 3D-effects often dominate the box office. The same notion goes for software, where an embellished interface, proper menu arrangement and up-to-date graphics and effects are all critical components of the overall user experience, and often form the deciding factors for one particular package over another.