Now I have to chip in here because I work for HP and HP have famously designed some of their stuff in California. Hell, they designed Silicon Valley, while we're at it. Didn't Steve Jobs learn a thing or two at HP and Xerox, back in the day? HP still designs some stuff in California, but then a lot of it in Houston as well, funnily enough. And all over the planet. That's not the point though.
California didn't become one of the largest economies in the world because Jobs launched the iPod, you know. It was pretty much already there.
This is a good illustration of what Obama meant when he said "You didn't build that yourself". The infrastructure, technology, educational system, time and circumstances have to be available for people to come up with the things they come up with.
This is why a dirt-poor coffee farmer in Guatemala without electricity didn't come up with the iPod.
Apart from that, I buy Apple products because the interface is spiffy, they mostly just work, they are silent across the board and they look good. Alternatives that are equally silent and good looking have only become available recently, and then still at a price point that is not far off. You might say I don't care where my electronics are designed or assembled, I care about look, feel and functionality.
Now I'm pretty sure this goes for most Apple consumers. Quite frankly, I had an iAudio X5L MP3 player back in the day for some of the reasons you mention. However, the interface was so sucky that when it broke, I played with an iPod Classic for about five seconds and realised why this was a superior product in every way. It's got nothing to do with fanboys, it's just good design.
If however another company becomes better, I have no qualms in ditching them.