Agreed. My family uses daily a MacBook Pro I bought in a Thanksgiving sale in 2008. My wife is watching a movie on it as I type this.

A few years ago I thought, if I can get this thing to 10 years, that’s a great deal and I’ll be happy to upgrade. Now it seems like maybe I’ll be able to use it forever? I’ve had to replace one battery and one fan in almost 12 years. The DVD drive does not work anymore, but I don’t use DVDs anymore.

Honestly I think security will be the biggest concern long term. It can’t upgrade the OS anymore and while whatever version of OS X it’s on seems very stable (it never crashes), it’s not getting patches anymore from Apple. Something will come along at some point.