I normally buy the organic variety of fruits and vegies and I always wash them before eating. Yes, even the organic produce. Why? Because mice and rats thrive in all the areas these items may be stored and anything they leave needs to go away. It's usually best to wash most anything like this you consume that isn't cooked.
Have you seen the videos that have gone around recently about people cleaning the wax off of apples? It's scary to think about how foods that are being sold to us are having harmful stuff added just to make them look prettier! Although I'm probably the last person you'll see paying more for expensive "All-natural" fruit, I don't like the idea of adding stuff to something that our ancestors have been eating just fine for centuries.