Why Buy iPhone?

I was sitting in the Hong Kong International Airport on its way to Australia for Christmas, and I simply log on to eBay, and I bought a new iPhone 3G 16GB $ 818us (including shipping), but not a lot of buying phone WHT, but does it even more nuts is that I have the equivalent of Nokia N95 8GB Nokia. I only used 1 gigabyte, and no even install the software or the Nokia Maps update the phone