I think that it may be the work settings veiwed.
I use both Mac and PC, but for very different things. If i want to play games, or need more variety in general apps, I use my PC. For runnning heavy progams and multitasking, I use my Mac G5.
To me they are very different machines with distinct advantantages. I tend to do more of my work (that requires alot of graphic processing) on the Mac, but most other things I do on PC.
I would not say that Macs are the best for all kinds of work, as I have friends that are into more scientific feilds that love a good PC with Linux over anything.
I do understand what you are saying though. I see alot of silly positioning on TV. I watched this show called CSI awhile back, and saw someone pretending to use a genome sequencing program on a Mac (and as far as I know) there is no such program for Mac, but I could be wrong.