I posted this at XDA a while ago, but i will report it here:
Screen protectors don't hurt. I just don't think most people are educated. I will not judge someone either way, but I know many people don't fully understand why they have one except for the fact that many have them.
As for self-healing screen protectors, not so much. It just dulls away after constant use like buffing a scratch on a car. When the scratch dulls, so does the screen clarity. If you peel off the skin, the difference is night and day. [FONT=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif]Besides, most people leave the scratched plastic protector on over their glass screen which reduces touch sensitivity, obscures view and honestly looks like crap. What is the difference (aesthetically) between having a scratch-less screen with a cover that makes it look scratched or having a naked screen with a micro scratch? Plus, because the screen protectors scratch just looking at them, your device will always look scratched. Is there a point in spending 20min and $12 every month or two to have a false sense of security? I mean, just because you have a screen protector, are you gonna be less careful with it? [/FONT]I do agree that it reduces glare, but that is because many are tinted, barely visible but are tinted none-the-less, otherwise there would be no glare protection. It is the same as a contact lens. So, if it reduces glare, it also reduces screen brightness and clarity. Also, it does impede touch sensitivity, while not very noticeable, it does. Think about it, you are impeding the electrical conductivity between your finger and the capacitive screen with a plastic barrier.
I will agree that they are great for reducing finger smudges. Once again, I don't want to tell people not to buy them or mock people who do. I just want to educate people so they can make a solid decision for themselves.