I used to fly a small feeder route for UPS. If items come from a small, remote town it can get picked up in a mighty small airplane... like.. one in which the pilot has to climb OVER your stuff to get into the cockpit. Think about it.. loaded into a truck, loaded into a little airplane, unloaded to a distrubution facility (where it rides around a bit and may tumble some) loaded into another airplane (maybe big, maybe small), loaded into a truck, set at your door. Might even transfer into another airplane in there somewhere. Sometimes things go well, other times not so much. However, even DHL and USPS go through the same process.