The Problem with Returns
THERE IS NOTHING BETTER OUT THERE.
I have looked extensively today, and found NOTHING.
For comparable slim and light build quality your options are limited to "ultrabook" unless you are happy with the arguable boat anchors that high powered PC laptops are designed with.
The closest slim and light build quality I found is the Samsung Series 9 Ultrabook - 15" 1.7Ghz i5 Ivy Bridge, 1600x900 matt screen, 8GB RAM, 128GB SSD, Integrated Intel 4000 graphics only. (Price: £1,300)
So if I return my rMBP, the best I can hope to get is a saving of £1800, for a laptop with a weaker processor, poor poorly reviewed screen, half the RAM, and a tiny SSD with barely functioning integrated graphics?
Since when was the PC Laptop market this bad?
Your problem isn't the market. Your problem is the way you define "better". In your world, "better" is defined by the paper specs. Like saying that a Nissan Titan must simply be "better" than a Ford F150 because the Titan has greater torque. Or that a Prius must be "better" than a Nissan Sentra because of greater gas mileage.
Perhaps you should reconsider the definition of "better". For example, in my world, "better" is what device most effectively gets the job done regardless of specs.
I do a lot of video editing. On paper, the MacBook Pro should be sufficient, but I use the iMac. Why? It's better at it.
I do a lot of web chatting. On paper, it doesn't matter which machine I use, they all can do it fine. I primarily use the MacBook Pro. Why? The screen real estate and mobility make it better for that use case.
I travel a few times a year on business. On paper I could take the Pro or the Air. I choose the Air. Why? The Air is better for the cramped travel space.
I choose not to buy the Retina because I am an extremely heavy web user, and I already accept that the majority of sites I visit simply will not rewrite anything to support a minority of visitors. It's not going to happen now or in the future. Now maybe the browser makers will figure out a way to render things cleaner for Retina without the web developer doing much, but I seriously doubt it. And unfortunately, web has to look pristine because it's all about readability. On the MacBook Air things are well sharp enough.
Do you realize that the ONLY diff between what you have and the standard MacBook Pro is a screen that by your own admission cannot display things optimally for you? You totally ignored the regular MacBook Pro which is still available and functionally has identical specs.
You're trying to justify to yourself that this screen is "better" yet you are making concessions that you wouldn't normally make. You're trying to force yourself to like it, as it were. That's your choice, but again, it doesn't make it "better" simply because the specs are higher; you don't like what you see. Do something about it.