The Post Office blows!

Im so sick of these lazy dumbasses not doing their jobs right, delivering a poor product, and expecting large sums of money for that crap service! Not only that, it seems that they don't give a f--- when something does go wrong on their behalf! I shipped an intake manifold and a edelbrock carb to a guy in South Dakota from here in Cali. When it arrived, the box had two 14" holes in the sides, all of the foam and paper inside was missing, the box was open, and there was damage. The air cleaner locating tabs broke off the carb, the choke was smashed, the linkage was bent, and there were sharp edges on the manifold. I had to refund the shipping, plus $40 to the guy to avoid a bad ebay rating. I am pissed. The post office, even though it was insured, said it wasnt their fault. How the hell can a normal human being even deliver something like that and feel good about themselves?? I paid $40 for shipping and they said i could have avoided the issue by purchasing more expensive shipping. B.S! That should have no bearing on what happened.