Nkrs
I don't see anything wrong with using an older computer. Sure, newer software often expects newer hardware and things might go slower than usual, but I don't think that warrants a full computer upgrade every year (and if you ask me, software developers are to blame). I'm personally using a 7 year old desktop; I've changed the motherboard and added more RAM, but that's it. I do have a newer laptop, but it's much nicer to type on a mechanical keyboard and look at a 24" screen. Perhaps it's all rooted in culture - where I am from things are often used and fixed rather than discarded.