I was going to write about the new Retina MacBook Pro, but Garrett Murray wrote it for me.
On non-retina apps:
The app landscape will improve with time, but the internet is a different story.
People see the cost of the base-model rMBP and compare it to the 15-inch MacBook Pro and determine the $400 difference [for the retina display] is too much for such a useless feature. […] That $400 difference buys you so much more than the display upgrade.
It’s a hell of a machine.