Reason for the cases is that it preserves the phone pristine condition. Try to resell a phone that is rugged and suffered multiple drops and scratches, you won

Reason for the cases is that it preserves the phone pristine condition. Try to resell a phone that is rugged and suffered multiple drops and scratches, you won't be happy. Now, try to sell your phone without the wornout case, which looks close to new: a lot easier.