I have the a third gen Iphone that fell out of my cargo pocket at 55mph on my motorcycle. It did have a plastic case on it at the time and came away unscathed. That pretty much sold me on cases forever. I often tell people the iphone is the best electronics purchase I have ever made. That said, it can also be very frustrating at times. It does have it's own little idiosyncrasies, but overall it has more pros than cons in my book. One of the reasons I got an iphone vs. all the other offerings out there was that there are so many things specifically made for it. You simply won't find that on any other platform.