I dropped mine once, but it was tile I believe. I've dropped it on carpet a few times.
I'm extra careful with this thing. Not because I dont' want to scratch it (which is a valid reason) but because in my mind I know that I REALLY rely on this thing now. If I drop it and it shatters, I don't want to be without it for 2-3 days while it is being replaced. Come to think of it, it would probably be replaced overnight, but whatever.
This isn't really a "phone". My last phone was a phone. Flip up, make calls, once in a while a text, and that was it. This thing is a mini-laptop. So in my mind, the value of the Droid is much higher than a regular phone. I couldn't really care less if I dropped my LG phone.
Also, I'm a bit neurotic when I put this thing in my pocket. I make sure nothing else is in that pocket.
I really need to get a life.
-Wil