I decided to create this forum because people tend to forget that the non retina macbook pro is still a viable option for many consumers. While it doesn't have all of the flash that the MBA and rMBP, it can still keep up with them and has its own set of advantages. Here are some of the advantages that led me to my purchase.
1. The cMBP comes standard with 500 GB's of storage. It is slower but you have the option to upgrade is to an SSD which leads me to my next point...
2. The cMBP is upgradeable. In the MBA and rMBP the storage and ram are soldered in. In the MBP you can add more ram or storage in a couple years if necessary, making it more future-proof.
3. The cMBP has an optical drive. While most media is downloaded from the internet these days, it is still useful to be able to load a friend's CD into your music library once in a while. While you can buy an external Cd drive for the MBA and rMBP's, that kind of defeats the whole purpose of portability as you'd have to lug it around.
4. The cMBP is more powerful. While the MBA might seem faster due to the SSD, it actually has a less powerful CPU. Once you start doing more intensive tasks the MBA will start slowing down. THe rMBP has the same CPU as the cMBP but it has an inadequate GPU for powering its retina display, making it slow down.
5. The cMBP is cheaper. With my education dicsount, I bought a brand new500 GB MAcbook pro with 8 GB's of ram for only $1,100. It would cost $1,600 to get a MBA with all the same specs.
Well that's why I pulled the trigger on a cMBP and I couldn't be happier! Feel free to chime in if you agree or if you think I'm wrong!