I'm usually pretty rough with my phones too.
I dropped my phone in the toilet once, then I dropped it a few times and even though it had a case it still messed up the phone. And not just the screen, I mean the entire phone was messed up. The screen flickered and it wouldn't recognize my finger on the screen. Then eventually the screen turned black even when the phone was on, so I had to get a new phone.

I didn't have the money to pay for a new iPhone so I ended up getting an android.