James
Lord of the Erg\o/s
The main advantage of DSLR is having better control over the focal length, DOF and exposure. For serious photography, I'd pick my K-5 every time. But 99% of my photographic needs are hardly critical, and that's where my iPhone is perfectly fit-for-purpose. I suspect that is true for most people who want to take photos whilst they enjoy getting out and about, rather than taking good photographs as the primary purpose of being out and about.