People are being conditioned into not looking after things. From the late 70s onwards, the emphasis has been on discard and replace, rather than look after things. After the DIY craze of the late 50's and into the 60's made a denbt in profits, manufacturers took steps. Out went solid, craftsman made furniture, in came flimsy self-assembly units designed to last no more than five years and to be impossible to repair, New Health and Safety legislation was put in palce to make it harder for people to do their own plumbing and electrics. Complex and often unnecessary technology was added to cars , white goods and brown goods to make self-repair expensive and/or impossible. Rapidly-advancing technology, or cosmetic tweaks sold as such, meant htta stuff went out of date more quickly. Micrsoft don't have to discontinue support for older versions of Windows - they do it to force people to buy the newer one, which usually means having to get a more up-to-date computer.

The current state of capitalism requires constant consumption of new commodities. Looking after things, maintaining and repairing them, cuts into profits. Constant 'advances' and 'improvements', shoddy manufacture and built-in obsolescence together with a manufactured culture of discard and replace and the 'need' to have the latest kit have produced generations who donlt even consider looking after things, and who expect nothing to last.

Your tenants probably think that you update the place every couple of years anyway!