Actually for a touch screen user... the Start Screen does make sense.... The problem is it doesn't apply to the keyboard and mouse effectively or efficiently which is what most users on a desktop use. Luckily, third party utils like Classic Shell addressed the issue and anyone running Win8 and still complaining about the Start Screen ( because they aren't using one of these utils ) only have themselves to blame at this point. A touch interface IS needed... it just isn't all that is needed by everyone.
