Survivorship bias and "when do I toss it" - I have a freezer/fridge thing from Best Buy (something like this but it was about $300 on clearance:
https://www.bestbuy.com/site/insignia-13-8-cu-ft-garage-read... ) that literally is one box that you can dial in a temperature on. It had wifi for some unknown reason that never worked, but still pitifully broadcasts a wifi hotspot. It's been running for five years now, and it can only die by ceasing to freeze; there's nothing else to break.
The fridge in the kitchen, however, has various features, some of which would cause me to throw it away even if it was still functioning as a fridge/freezer - for example, if the ice maker died, I might just replace the whole thing, instead of spending $300 to replace the ice maker, especially if it's a metric pain in the ass to do so.
I try to take a look at repair prices and parts now before buying, because a $500 appliance where the likely breaking parts cost $500 is unlikely to be something that lasts long-term.