Unfortunately, many professional photographers, graphic designers, creative directors and ad agencies just don't get it. They get so caught up in their desire to "be creative", win an award or copy the latest fad that they totally miss the point. They forget that the whole reason they're hired is to increase sales.
Because we think in pictures (think of your car - does an image come into thought or do words?), images influence perceptions. You'd better have images that convey quality, create desire and build trust. Images that are at least as good as your major competitors and preferably better.