TLDR: Mac SSDs last longer than older HDDs; expect 3,000 erase-write cycles for modern SSDs. Monitor data written to estimate lifespan, keep at least 10% storage free, and ensure ample RAM to avoid rapid wear from swap space usage. SSDs generally wear out over time, but with proper use, they can function well over a decade.
https://eclecticlight.co/2026/02/26/how-long-will-my-macs-ssd-last/