Whilst I think the 4 & 4S designs are amazing, Apple should drop them and lean towards something more practical for everyday use.
The first thing I thought when I unboxed my 4 was, wow what a beautiful phone, this will cost me a fortune if I drop it. How many iPhone 4 & 4S users now have that beautiful design hidden away in some cheap and nasty case? Far too fragile for everyday use.
Time to move on.