I've never had a case on my iPhones (3G, 3GS), dropped them numerous times on concrete, and the only thing that put one out of commission was dropping the 3G in a toilet. Replaced it with a 3GS in 2009 and it still functions perfectly. Admittedly, it looks beat to heck compared to other folks' phones, but that ain't no thing. Never understood how Apple can sell so many phones if they can take the beating I give them.
I have the same experience. My wife however bought the iPhone 4. In my experience, compared to the 3g(s) the 4 really breaks fast. 2 drops and screen was gone versus my countless drops (on concrete). It's anecdotal, but I here this more often from people.
This, I think is the greatest argument for the iPhone. While everyone clamors for the new upgrade they really are premium and durable products. Apple makes their money when everyone thinks they have to have the newest iProduct.
just as a frame of reference if this is the greatest argument, they perform rather poorly in documented drop tests in comparison. Now not every situation is the same but just going by what is shown on recorded videos
