> First: it's not five years. It's five years if you posit that macs are magic and use no energy[1].

Huh? I'm not "positing" anything, I'm responding to the longevity you stated:

> you'd be looking at crossover in 5 years, or longer than the expected life of the device.

As for Apple users not having devices older than five years... ehm, yeah: the brand targets an audience that really likes shiny new toys (either because they're lured into thinking they need it, or because it's a status symbol for them). Not sure how that's relevant here though