It's not so much the fact that it was made in China as much as that we are so obsessed with lowering prices that we are willing to cut whatever corners we can to do it. China is just a convenient stand-in for cheap off-shore manufacturing, and one of many places where this is done -- Vietnam, Korea, Taiwan, Mexico, Bangalore, etc.
The whole manufacturing industry seems to be going down this road. It's not just Apple. Was your last toaster as durable as the one you bought 20 years ago? How about your last microwave? Car? Stereo? "They don't make 'em like they used to" is said pretty universally.
I was at Wal-Mart the other day and saw their latest batch of Rubbermaid storage containers. They're a weird shade of blue, and the lids are made with plastic so thin they can't even hold their own flat shape.. they're all warped and, well, "off" looking. You see that everywhere now.