After 10 years, my 13" 2011 MBP with 16GB of self-upgraded RAM & 1TB SSHD running High Sierra is still usable, on the original battery for at least 4 hours. It boots and does quite a few things, like playing iTunes music, movies, and CD's (ever heard of those shiny disc thingys?) but due to software compatibility with most of the Adobe apps among others and no further security updates for online use, I have had to relegate this die hard piece of hardware to digitising vinyl records, scanning photos, and other media jobs like streaming Netflix to a 21" monitor. It won't be for sale, I don't need the money, unless someone wants to one day pay me what a working Apple I is currently worth.
So it has been a decade since I bought my last MacBook. Now rocking a 13" M1 Air. Here's to the next 10 years!