That's what I'm trying to tell you. Meat made the machines.- Terry Bisson (They're Made Out of Meat)
I've had an iPhone since 2007 and Mrs.Chaos has had one since 2012. Between the two of us we've had about 14 years of carrying around an iPhone and we've lost around two screens.
She dropped her iPhone 3Gs and put a nice crack in the screen - nothing too bad. She put a screen protector on it and managed to carry it for another few months until she was eligible for the next one. I dropped my iPhone 4s and put tiny little chip into the screen - nothing too bad. I trivially carried another six months until I was eligible for the next one. This past month she dropped her iPhone 6 and *BOOM* the screen exploded in the insane way that screens do. We paid to repair it.
I'll be super interested to see what kinds of materials mini-Chaos and micro-Chaos will carry around in their pocket and how shocked they will be that our generation carried around these pieces of glasses that had a habit of shattering. Their phones will probably be pretty darn shatter-proof and I think it's very likely they will also be water-proof. What a future!