If the screen protector in no way detracts from the look of the screen, or the touch response of the screen, then why not use one? If through some unforeseen circumstance, the screen does get scratched, (keys or a tool in the wrong pocket, sliding across the gravel) you'll wish you had spent the $$ for a screen protector. If you try to sell the phone at some later time, and claim you have always used a screen protector, it will likely fetch a higher price. I've always used them, and one or two generally last the lifetime (2 years) of the phone.