I usually use a case and screen protector when I first get the device and baby it, then after a short time go completely naked because it feels better in hand and so I can enjoy the design.
With my current X I used protection longer because I change phones without owning them for a year and wanted to maintain higher resell. But I've still got it and been using it naked for the past 6 months. At first I just took the case off, then the lip of the screen protector got to me so took that off. My screen has a few micro scratches and one long scratch (jean rivit?) I can feel but not see when using. No regrets, it's a device that gets heavy use each day and I have a more enjoyable experience without anything on.
With my current X I used protection longer because I change phones without owning them for a year and wanted to maintain higher resell. But I've still got it and been using it naked for the past 6 months. At first I just took the case off, then the lip of the screen protector got to me so took that off. My screen has a few micro scratches and one long scratch (jean rivit?) I can feel but not see when using. No regrets, it's a device that gets heavy use each day and I have a more enjoyable experience without anything on.