Agreed. I have a 6.5 year old Roborock S5 Max, and it still works fine. I've replaced a few parts (can still get on AliExpress), but other than that no issues. It's cleaned 74km2.
Same here: 10 year old Roomba from the 6xx series, still going strong. I bought official replacement parts for a wheel, some brushes and a new battery: Replacing them was very easy - just a few screws, no glued-together parts.
Assuming you live in a crazy big house (1000 m2), it cleaned your house 74000 times. Given S5 was released 8 years ago, even approximating it to 10, that's 20 times a day. I can imagine it taking about an hour to do one clean run. Jesus, did it ever stop cleaning
Also very fond of the Roborock S5, in fact I recently got a second one for the other floor - totally took it apart, cleaned it, put it back together and stuck Valetudo onto it. The first one is from 2017 and still going strong - issues so far: battery replaced (only recently), laser motor replaced, fuse replaced. Aside from the fuse it was very easy and doable for basically anyone.