Glass on a cell phone is a joke, that apple started, I cracked the lumia 720 and the 928.
I would rather have a scratched screen than shattered screen. Anyhow everyone uses a screen protector to protect from scratches why do we need glass screens?
I haven't used a screen protector in years, I hate how it reduces visibility and sensitivity. That and you have to replace them regularly. I've also had only one cracked screen in I don't know how many years. I imagine many people feel the same. Tiny scratches don't even show up when the screen is on, and anything heavy enough to make a deep scratch could likely cut through the protector anyway. It's just the nature of the beast, you can't win 'em all.