"Photographically speaking, having the camera with you is a real benefit."
- Jay Maisel
Which one's always on you? If you, like some photographers I know, always have your camera around your neck, great. For everyone else, there's the iPhone.
Edit- added attribution
Agree! Professional photographers will still use a DSLR but regular people will shoot these images with their iPhones. And the new iPhone is brilliant in it.