I keep my phone in my jeans pocket all day and guess what..after a week I picked up a nice deep scratch on the screen!
What on earth do you keep in your pocket? Do you put it in the same pocket as your keys?
In 7 years of owning iPhones, I've never picked up a scratch on my screen yet. On the edges, I had a few marks on my phone as I used to throw it around a bit towards the end when I knew I was getting an upgrade, but I've found it pretty hard to scratch a screen