I'm person who receives enjoyment from my car, and knowing how it works, and what everything does. I drive a manual because I enjoy the ability to be able to control the power delivery of the car more accurately, and I love being able to put the back end out with a good push of my right hoof.
My wife on the other hand, just wants to get to work and back without breaking down, and refuses to drive my car because it's too big and she hates driving in peak hour with a clutch.
Should my wife have to know everything about how her car works? No, of course not. In fact, most people don't. It's just a tool to her.
Likewise, the computer is probably a passion for you, but a tool for the web designer. In the same way that my wife just doesn't want to break down, the web designed just wants the computer to work.
As far as I'm concerned this is fine. Becuase too often an accountant will complain that they need a 280GTX for, umm, MYOB, and because their son said it was the best graphics card on the market, and MYOB is running slowly so it MUST be the graphics card because things are drawing slowly on the screen, and screw the fact that it's a $500 video card. A little knowledge can be a dangerous thing.
That's why God invented Macs.