[arrrg]

I don’t think two years is the average life time of a current MacBook. I would guess maybe three, four years, maybe even longer. Most problems will crop up during the first year and be fixed on warranty.

Mechanically the devices are very solid and will survive for many years.

The biggest issue is the battery, really, and probably the power supply, both of which are costly (maybe 25% or so more than a replacement battery for another laptop, plus you have to bring in the MacBook to get it replaced, you can’t do it yourself), but can be replaced. Most people will just not do that, though, and live with diminished battery life and fraying power supply cables.

I think you are stuck in your filter bubble if you think people want to buy a new one quickly. Many will live happily with a current MacBook for many years. A decade ago the situation was a bit different (and performance crummy), but nowadays the speed is there.