I've been using a 2013 MBP since early 2014. I did replace the battery and trackpad, but it is otherwise original. It still works very well, and in many cases

I've been using a 2013 MBP since early 2014. I did replace the battery and trackpad, but it is otherwise original. It still works very well, and in many cases it is as fast or faster than my i5 2019 work MBP. In any case, I would not consider Apple computers "disposable".