You absolutely loved it for a week? OK. 2 entirely different purposed books. If you need a cMBP a rMBP will not replace it. A rMBP is really not all that professional. It is more a Macbook Air/Pro. Pro's need options that are not contained in 4-5 50.00 dongles. My 2.6GHz is far cooler than any other Macbook Pro I have owned or operated, which has been every single make model and cpu speed. Most of the cooling is thank to Ivy NOT Apple engineering.
What dongles ? I have WiFi at home and at work, which negates the need for an Ethernet port. No need for an optical either since all the software I need is either available on Flash or direct download.
A week was enough to know the machine since I am not new to Macs [ owned a 2010 MBA, 13" early 2011 and 15" late 2011 MBP].
The rMBP just suits better for my needs. It is also runs FAR cooler than the cMBP, no matter how you slice it! I don't care if it's the new chip or Apple's implementation of the cooling system, it's working great for me and that's all that really matters in the end.
I remember when I worked for IBM Global Services, I was given a T42 [ iirc] and the optical drive was replaced by a second battery. The optical drive [ much needed during that time ] was an external that I had to lug around everywhere. That was a bit of a hassle, but you get used to it.
Finally, should I ever need say an Ethernet dongle or Super Drive, it's not that big of a deal.
Someone at my work said ' well some hotels still offer wired internet ' to which my response was that I can always tether with my phone which has great 3.5G coverage in many places [ Nokia N95-4 + AT&T ]