Bummer
Hey Carlsen, this is really unacceptable. You are unfortunately not alone in your experience with hardware. I've read countless articles and had numerous personal encounters with poorly built MacBookPro's and MacBooks. Most recently my girlfriend purchased a MacBook and within 3 days it stopped working almost completely. It would randomly shut off, sometimes it wouldn't power back on. Finally, it stopped powering back on. Fortunatley the Apple store swapped it out with a new one that actually works. I think you may be on to somethine about production, I'm starting to wonder if Apple hasn't made some dramatic change in their laptop production or quality control.
On the upside, though, I will say that I have been a mac user since 2001 and have had my fair share of ups and downs. I'm a 3D Animator, editor, and videographer, so I run some pretty heavy apps. My newest machine is from the last gen of PowerBooks before the MBP replaced them. So essentially it's the same set-up as yours, just a fraction of an inch thicker. As far as externals go, my keyboard is assembled beautifully and I've not had any issues with the trackpad, etc., though scratching is an issue.
I used to be a Mac zealout, but anymore I simply look at my computer/OS as one of a number of possible tools. In my experience in both personal and professional situations with Macs (the studios I've worked for alomst all use Macs), the hardware has stood up to rigorous testing. Believe it or not, some studios I know still have one or two 10 year old machines that still run quite stunningly (for video and such). I myself still have a 6 year old machine that, for most things, runs beautifully. I use it mostly now to render when other machines are busy.
Right now I trust my Mac's for most things, but have had regular issues with my laptop crashing when running heavier applications. I don't like the way the mac freezes for a while when you get disconnected from a network. And for all the bragging they do about less crashing, they really need to fix the god damn beach ball.
I will suggest, though, Carsen, not to give up on Mac's just yet. I've been in both worlds for some time now and, despite the occasional issues, I have ultimately found my experience with macs to be very rewarding. They're always listening to customer complaints and trying to really build their machines around the demands of their users, which are quite varied and which makes the macs quite versatile. In the future I will probably be using a windows machine as well (if only running in bootcamp), simply because autodesk refuses to make the mac version of Maya 64-bit. You really did get a bad apple (pun intended) this time, and I'm inclined to think that in this production line there were far too many of them. But like I said, in the 6 years I've used them the overall experience has been very positive.