Do I need a screen protector for my new touch-screen smartphone? With my old dumbphone I never really worried about the screen, but my new iPhone 4 has a pretty gorgeous screen that I certainly would never want to come to harm. So I was wondering how many people out there use a screen protector, and what your experience has been.

Specifically:


Do you use a screen protector for your smartphone?
Do they interfere with touch-sensitivity of a touch-screen?
Are all screen protectors created equal? Are there "good" ones and "bad" ones?
Are they more resistant to fingerprints than the glass?
Do they get grimey/dirty/cloudy?
Are they harder to clean than the glass, or do you just replace it?
How often would you need to replace it?
With glass on the back of my iPhone4, do I need one on the back as well? Or is that just stupid?


I guess the most important question is: 


Do they really protect the screen in any meaningful way? Or do they just make you feel better?
No, I hate screenprotectors
Most of them really don't
There are certainly bad ones, that are hard to apply or peel off easily, I've even had one that would blur the screen
Only the ones that blur your screen ;-) They have a slightly matte finish so fingerprints won't be as obvious
Yes, yes, and yes.
I suggest you just replace them, they're not that expensive
I believe it is all stupid...


They just make you feel better. The glass on the new iPhone is incredibly difficult to scratch, and even the older ones hardly scratch at all. I suggest you stop caring so much about a little scratch, the device is supposed to be used. You'll hardly notice it if there even ARE tiny scratches. 

If you want to protect it, what you really need to worry about is the thing breaking after you drop it, try a protective case instead. :-)