Yes and no.
If you value a good display - and it's truly a bloody excellent display, great viewing angles, everything looks 'painted on', great colour rendition etc then that alone should be enough to sell it to you.
If you work in any kind of graphics-based medium (professional designer or hobby photographer) then it's a no brainer. Get the Retina model. The display alone will make up for the cost in day to day use.
If it's your money, and you just want something nice and powerful with decent portability for doing web browsing and office-y tasks, then TBH there's f-all wrong with a regular MBP or, if even a MBA 13" at a push. Their non-IPS/eye-popping display is still a cut above most regular notebooks you care to mention. And that extra £400 can go towards speccing it up some.
Or more realistically, banging more RAM and an SSD in there yourself, or by an authorised apple store for warranty purposes, say a week after you buy it - not something you can do with a Retina with it's soldered in RAM and custom SSD connection. And Apple upgrades on CTO are stupid expensive, FACT.
If it's a case of you have a couple of grand to throw at a laptop however, little touches the MBPr for all round use - the PC manufacturers haven't managed a decent answer yet IMHO. My problem is I can never envisage having a couple of grand to put on a laptop, so your milage may vary.