> I agree with you, you're still going to put it in a fat case to protect the camera.

The Apple cases aren't flat on the back. They have a rim around the camera bump (and they create a rim around the front of the phone, too). The rear rim is slightly taller than the lens bezels (not sure if I used the right word there), so they don't touch the surface the phone rests on. I place my phone+case on the desk face-down because the camera bump and the wobble it creates when resting the phone back down triggers some minor irritation for me. The slight rim around the front of the phone keeps the screen from touching the surface. All of this would be nicer if the phone were flat across the back.

The metal case and toughened glass mean I don't really need the case most the time. I once dropped an older model onto a concrete floor such that it landed on a corner, shattering the screen, so I'm more risk averse with them now.