My non stick loaf tins have lasted for years and they haven't deteriorated and have no need for greasing let alone use greaseproof paper.
I have an excellent spring release non stick cake tin I bought years ago in Switzerland, don't know if it is Swiss or German but that doesn't stick either and has been used gazillions of times and hasn't lost any of its non stick surface.
The only thing that has lost some of its surface and I do hesitate to use it are my mince pie tins, but I bought some new ones in England (they don't exist here in France of course!) and they were the wrong size for my cutters. So I still use the dodgy ones!

But then again they are about 20-30 years old.
What we DO find that needs replacing every 5 years or so, unfortunately, are frying pans, which do lose their surface. It doesn't flake off, but food starts to stick more. I don't think that should happen because we only buy expensive good quality in the first place.

But my new ones are freebies with my supermarket points

so don't knock the supermarkets that much as I've got loads of goodies with my points including a bicycle! (which of course I don't use.....

)