The thing that makes Mac great as well as terrible is their closed architecture. Sure, you have great security with a Mac, but because of their closed architecture, no one can write software to interface with it easily or cheaply. This bad thing has a good side: you can't write viruses for a Mac.
With Windows/IBM operating systems, since anyone can write a driver, dll, or other software device for it, you get lots of easy, cheap, versatile applications, but you also get a security nightmare. This is how Gates eared such a huge market share for Windows, by making it so that anyone could work with it easily.
When the Spurs lose...it makes Baby Jesus cry