zlacker

New cars come out every year, with minor updates, and big updates every 3-10 years ("generation"). I am still pretty happy driving a 2006 car. Maybe phones move toward that, but I like incremental improvement, and I'd be annoyed to buy a phone today which is 4-5 years old if I'm also wanting to keep it for 3-5 years.

Enterprise computers get refreshed every 3-6 years, usually (I'd probably do shorter for most laptops, longer for desktops). Monitors can do 5-10 years. Until they became active electronics, headphones/speakers/microphones which were decades old were fine.

Biggest boost on a lot of new mobile device refresh is getting a new 0-cycle battery and a clean OS install, and for a lot of people, "buy a new one" is the main opportunity for that kind of upgrade.