I understand this reasoning, it is expensive. What I don't get is you are protecting it, but never enjoying the perfection that is underneath. I can understand if it is your intent to sell each year, but to keep it in a case and pull it out after 2-3 years and see that it is perfect really seems pointless. You had to use a cheap piece of plastic to cover the body and potentially the screen, so that in a few years yo can take it off and go damn that case really kept this phone mint, well on to the next phone!
It does suck if the phone is dropped or whatever and gets damaged, but without a case, I do get to enjoy the phone as it was designed, without some cheap piece of plastic making it feel bulky or cheap.