The black one looks almost like a PSP or something. When you're holding a white iPhone, people KNOW it's an iPhone. When you're holding a black one, people could think it's one of the other hundreds of smartphone devices out there (unless you look closely).
Some phones from the back look very similar to the iPhone 4(S) from a distance.
I don't understand how white is better just because it's "different".
"I want to be different, that's why I want white."
"A lot of people have black so I'm getting white."
I'm sorry you guys buy things based on what other people do. I bought black because I think it looks better than white. Period.