I am a designer by trade, but my work goes beyond just Design. I do extensive CAD and photorealistic visualization (still/animation), image manipulation, database management, video editing and project management. Beyond that, as many others now do, I use my computer as a media center and gaming (or lack there of). However, what I do is not so much at issue as is "what I could be doing" if Macs had anywhere near the offerings available to PC buyers.
Wouldn't you rather be the one to decide if you need HDMI, lets say to connect your Mac to a high definition TV for a presentation? Or viewing a movie you made or purchased for download? Shouldn't you be the one deciding if you need Blu-Ray for archiving or media distribution? Inexpensive eSATA for your fast storage requirements? Why must Mac users be denied affordable and widely used/proven technologies simply because Apple has hidden agendas? Why should we stand for it?
On top of that, we are asked to pay a huge premium for computers, not only lacking these and other technologies, but with dated video cards, less storage capacity and in some cases less RAM. In addition we are asked to pay extra for a now industry standard 3 year warranty.
Mac users need to reexamining the Mac and what we are getting, and what we pay for it, versus what we need and want. I know I want more, at least at a par with what PCs offer. I want value for my money, no matter what I use it for.