Buy the spec you want at the time of purchase and live with it.
I'm sure it's good for certain things (as I said type on screen, code, books etc) but paying extra for a screen that is inconceivably better for anything else is daft in my opinion. Also I hate the fact that you cannot upgrade the retina version yourself, it's glued together, you'd have to pay Apple to upgrade it for you and thus use expensive Apple drives/RAM etc.
Well first off don't get a retina unless you do lots of text work a foot away from the screen.
What? The screen is fantastic, to the point that I actually use it over a much larger external display much of the time now, and I don't even have great eyesight...
I'm sure you think it is. And that's fine.
What a stupid response. Really?
Nope, if you're happy with your purchase, that's fine.
But if I start telling you that you've spent a great deal of money on something that in all honesty is pointless, you're not going to like it. I could send you a number of links to research regarding resolutions the retina can detect at given distances but I don't want to make you feel bad.
Overall it wasn't a stupid response really was it? Because this response will just provoke an argument I can't be bothered to repeat.