Having the camera bulge sells more cases. (Who wants to lay their lens directly on a dirty surface when it sticks out more than the rest of the phone?)
I do. I don't care really. It's supposed to be made out of the material high-end watches are made so little chance of scratches. Sapphire and all that.
All in all. I'll wait a year for 7s to replace my 6s if nothing else worthy and working out of the box comes out.