If that's true, I'm surprised. We go through Macbooks like they're disposable. The case cracks, the keyboard gets unspringy, the screns sometime flicker, PMUs die. I love them, but "low maintenance" they are not.
Some are surely unsatisfied customers, but a lot of old-rev Macs go on sale when the shiny new ones come out (there was a flood of sale listings on my local craigslist today). People need to blow their cash on something, I guess.
