I mean, with how good the iPhone's camera is, I do not understand why the MBP's camera is so bad...
Well you are not going to take your rMBP around to take photographs are you?
Comparing it to the rear camera on the iPhone is pointless. The camera on the rMBP is comparable to the front Facetime camera on the iPhone because they share a common purpose.
No but what purpose is a 720p camera on a laptop? It has limited appear and may also increase the price if they did add that (and the MBP is expensive enough as it stands)I know but does it really matter if they have a 720p or 8mp iPhone camera? Does one take up more space or require more money?
I mean, with how good the iPhone's camera is, I do not understand why the MBP's camera is so bad...
As others have mentioned it would be pointless as well as an unneeded added extra cost. No one is going to take pictures with a laptop camera and for things like FaceTime and Skype what is included is perfectly adequate.