The purpose of UI design, above all else, is to deliver content and make visual sense of well planned out UX. The often debated battle between flat versus skeuomorphic design poses us a pivotal style decision in how we allow the content to communicate through our designs.
Understanding how either style impacts your design will allow you to make the best choice, rather than choosing the camp that suits your personal preference. Regardless of our chosen aesthetics, asking ourselves questions like: 'is what I'm designing usable?', 'Does my UI visually communicate the path my UX has laid out?', can keep us on the path to successful, useable UI. As someone wiser than myself once said, 'The best user interfaces allow the content to shout, while the UI whispers'. That single statement can grant the most clarity as we travel down the path of successful user interface creation.