Apparently, I'm not the only one who finds the physical design of the iPhone 4S horrid. Design guru Edward Tufte does, too:
Also the elegant sharp edges that encase many touchscreens require users to desensitize their hands in order to ignore the physical discomfort produced by the aggressive edges. Last year in Cupertino, I yelled at some people about touchscreens that paid precise attention to finger touches from the user but not to how the device in turn touches the hands of the user (and produces divot edge-lines in the flesh).
-Edwardtufte.com, November 2011 (via DaringFireball)
Oh yeah, there are also the 47% of iPhone 4S owners who wanted a redesign.