How Long Should Your MacBook Last? OS Support, Hardware, and Real-World Use
A MacBook's life is not fixed; expect roughly eight years of first-party software support (six years of macOS updates plus two years of security patches), after which hardware and daily use decide when to upgrade. Real longevity depends on your work: CPU, RAM, and storage must meet your tasks, batteries have about 1,000 cycles, and Apple's shift to silicon means older Intel Macs lose support sooner. Upgrade when macOS support ends or usability suffers.