No doubt gorilla glass is stronger, but it is scratch able, breakable, and shatterable (plenty of droid pics on the web showing this. Most videos showing some on tapping in the screen is quite silly IMO. Take a rock, 2 feet up, and drop it on that sucker (any takers) No, please don't you WILL damage the glass, lol
Maybe it comes down to life style, if you are in an office all day and then retire to the soft leather couch, on a daily basis, yeah (low impact life eh?) But if you like to hike, bike, run, climb, get a screen protector and case. That would be what I recommend to a good buddy