I constantly change my phone and computers since I have what seems like a "disease" for wanting to try a new gadget out constantly. As such, resale value is pretty important to me so I put on an invisibleshield (or bestskinsever skin since they are like 1/2 price) on mostly all my electronics. I personally suck at putting them on so I make my GF do it and she's a pro at it by now
. I get more $ back from reselling since there's nothing like selling a "used" gadget that looks like new.