Why put yourself in the little box of being a Mac user?
IS it really that rewarding or beneficial to you to classify yourself as something so that you can unconsciously conform to it?
Why not call yourself a Linux user and start complaining how other OS's lack customizability and how you can't really be a savvy computer user unless you've compiled your own kernel.
Using one operating system is overrated.
And that is why I pay $2300 for a computer (the general price of a Mac), and within that price, it includes 2 screens, a computer with 32GB RAM, 2 i7 processors, 4 Nvidea GeForce GTS 450's SLI, a motherboard with USB 3.0, and 2TB of storage to boot. With that, I can run 31 Mac OSX Lion's and still leave 1GB of Ubuntu to run it all. That, or 8 Window 7's running Crysis in each one simultaneously. Stupid Apple buyers.
As for the INTP topic, to some extent I guess it could give you room to conform, but in my eyes, it is not always a bad thing. Sure, I meet the standards to be called an INTP, but in those areas which characterize INTP's I see areas where I can improve and subconsciously, my mind makes adjustments to make me better at those things, for instance, my P is not the strongest so seeing multiple sides of a situation is a work in progress (mind you, my judgement function just plain fails).
As someone mentioned, it may subconsciously cause you to conform slightly, but what's wrong with improvement? It is a house I can leave when I see fit. Currently, I like my INTP'ness (that pun gets me every time), and will just have a few characteristics that make me a little 'different' even in the INTP community. Problem?