Although I certainly wouldn't say it's crap, much of it is still the same as PC components you'll find in any other system. All of Apple's components are manufactured in China, just like every other PC is, and most of them are from the SAME manufacturers.Well, I understand what you're saying about not being able to freely/easily upgrade, and some of the stuff doesn't have a feature that I prefer, but the quality of the hardware definitely isn't crap.
Of course, Apple's end product goes through more rigourous testing before sale, and most of the manufacturers are the better ones of the bunch but there's still very little that's different between a PC and a Mac when it comes to the internal components.
Now, design and form factor, that's another thing altogether. But at the end of the day, you pay for the OS, not the hardware.