My last 2 upgrades were MacBooks Pro 2013 → 2018 → 2024. The main reason was always the same - the fans were unbearably noisy 
(even after cleaning). Overall the computer was simply getting too slow, overheating, and I was usually running out of SSD space.
Now I moved to M3 with just a modest upgrade from 32GB RAM to 36, as RAM didn’t seem to be the bottleneck, and I hope to keep this machine for next 5 years again.
