NO, I'm telling you that you are totally ignorant of what Macs and OS X can do, and that you continually parade your ignorance. For most people, ignorance is curable, but given the number of times Mac users have informed you of the facts, you may have an incurable case - because you are willfully ignorant.
The Mac, that runs OS X, has no need for all those sound cards, Echo, it already has 7.1 digital optical in and out sound that is superior to the added on sound of PCs. Similarly, the Mac has no need of all those motherboards because Apple supplies Mac mother boards that provide what OS X drives. OS X supports any Ethernet card I've run into... but then the MacPro already has dual gigabit ethernet built in, so why bother?
Now, if you want to talk peripherals, I will grant you that most modern Macs will not drive parallel port peripherals without an adaptor... in addition, modern Macs also lack a PS2 port. They also lack a floppy drive (although you can plug one in and have it instantly recognized), a papertape punch, punch card reader, or buggy whip holder.
However, most modern USB or Firewire peripherals are truly plug-and-play on the Mac, in fact much more so than for Windows. For example, you can buy almost any Logitech mouse, trackball, or other input device and simply plug it in and all of its functions are immediately available and configurable. The same goes for Wacom tablets, and other input devices. The vast majority of digital cameras are instantly recognized by the Mac which automatically opens iPhoto to import any pictures that may be on the camera.
As for that HP printer... I had a call the other day from a business that has become my newest client. They bought a brand new HP network color laser printer. They plugged it into an ethernet network of mixed Apple Macs (OS X.4) and PCs (WindowsXP sp2). Every Mac (7 of them) could see this new printer instantly and installed all of its features including two extra trays and the duplexer via Bonjour automatically. It literally took about 7 minutes to configure every Mac to print to this printer. 1 minute each... without requiring a restart on any of them.
Their Mac users were quite happily printing to the new printer while they turned their attention to configuring the Windows PCs...
They called me after spending two hours trying to get even one of their PCs to even SEE that there was a new device on the network. I told them how to find the almost hidden Network install Wizard on the HP disk that came with the printer. I knew where to access the Network install because I had to call HP a couple of months ago with a similar problem installing a HP Network printer on a Windows network group. The wizard had to be run on each and every PC (all 17 of them) and took about 5 minutes per computer with multiple clicking and choices... and they had to tell each computer about the extras the printer had installed. In addition, each PC had to be restarted because changes had been made to the network configuration. It certainly wasn't intuitive. And it certainly wasn't "plug-and-play".
Real world examples of the hassels of making PCs aware of anything external to them aren't appreciated by some here.
Now CHANGE the EULA so I can install it on my PC... Microsoft Changed Vista's EULA so that you can install it as many times on diferent machines as you want... Windows can be installed on both(they don't restrict it to PC only(like Apple does)