I currently take my late 15" MacBook Pro Retina to Uni every day. It is absolutely fantastic; Microsoft Office (the office 365 package) is fantastic, Safari is great and the Uni wireless is incredibly fast too, I have all my music on there, a lot of video/film stuff too, I also play games on it from time to time (Football Manager 15 in dull lectures) and it's brilliant!
However, I will be 'upgrading' and 'downgrading' to a new MacBook Retina (probably the grey) with top spec for travelling to Uni with me.
Do not misunderstand, I love the "15 MacBook Pro Retina, however when it's in my GoRuck along with a couple of books, drink, few bits and bobs, it is pretty heavy and it is bigger than you think, so the smaller compact size is welcome as it's mainly going to be used for note taking, essay / article writing and web browsing so that's a better option for travelling with, however I'll keep my other MacBook Pro Retina for music / film 'stuff'

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I use my 'gaming' PC a lot less tbh, similarly my PS4 has become 'Netflix' machine (ahead of my Smart Samsung 3D TV, as the 'Smart' stuff ... I just do not like tbh).
Yeh.. a MacBook Pro Retina should be seen as a portable desktop, the MacBook retina should be seen more as a lightweight (hardware and size/weight) web/office machine (which it
should be fantastic for).