Well packaged products last longer, are safer to eat and look better. No body complains about eggs being in egg boxes to protect them, so why complain about oranges being in a bag to keep them together, or bread being wrapped in plastic to keep germs and dirty fingers off it.
Products do travel long distances, but if consumers want foreign foods (and they do!) we have to package them well to make sure they reach the UK in good condition. We are only providing what you, the customers, want.