Wrong. Nothing is scratch proof, not even diamond.
I have had every iPhone and have never had the screen protected .and have never had a scratch. That said, I do have the anti glare film from PowerSupport on my iPad and I love it - so mu.ch so that I may have to get one for my next iPhone.
Mmm.. i had my iphone naked for a really loong time then one day i saw some deep scratches on the corner of the glass. Oh well I honestly dont care, I dont like that pos anyway. Hopefully the next iphone is decent.