I bought an 8gb M1 Air in 2020 (for what now feels like an absurdly small sum of money) as an experiment in how-cheap-is-too-cheap / chuckable travel laptop. I ended up using it as my main laptop for 2 years without regret, then handed it to my son for school. It remains in perfect condition and as delightful to use as the day I bought it (Apple software snafus notwithstanding). I fully expect to get at least 10 year…
The memory limit is probably in my head now, it does pretty well as long as I'm not obsessing over activity monitor.