It's your worst nightmare. It's horrible if it comes true and you accidentally shatter your BlackBerry Z30 screen. If you have insurance you may be covered. IF you don't carry insurance, there still is hope for you if you have the time, patience and tools. Team BlackBerry member JCaloy, of the I Hate BlackBerry videos, shattered his BlackBerry Z30 screen. He did decide to change it out and made a nice little tutorial of how to replace it.
We at BlackBerryOS.com do not endorse doing this and we do not carry any responsibility whatsoever if you do decide to replace your own screen, as opening up your BlackBerry will void whatever remaining warranty you have on your BlackBerry phone. Do so at your own risk.