I am using a MacBook Air one year older than yours and have toyed with the idea of replacing it. My use is very similar to yours. What would motivate me to replace it is my patience, or lack thereof. When a web page is too slow to load or interact, when apps take too long to load, when I get impatient for the startup to end, when it cannot take advantage of faster Internet; all of those "minor" annoyances would motivate me to replace it. Of course if a critical application stopped working, that would motivate me even more. I'm not quite there yet.


On a Mac since 1984.
Currently: 24" M1 iMac, M2 Pro Mac mini with 27" BenQ monitor, M2 Macbook Air, MacOS 14.x; iPhones, iPods (yes, still) and iPads.