An ability to be able to take a photograph quickly will be a useful thing to have, with the new speedy iOS five camera application. No more missing that special moment that was just fleeting, too fleeting for you to be able to snap with your iPhone 4 camera.
A combination of the new iPhone 4S and the iOS five enhanced photo/camera software will let you grab image, that you would have otherwise missed.It is very tempting for me to upgrade my old 3G iPhone and have a new shiny toy to play with.