I think its time to post this - not because it is in any way remarkable, or in any way near the most extreme example of a worn in some ways but still perfectly working camera, but rather that it is the best example I happen to have:
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That was shot seven years ago. The camera has continued to work fine, with the exception that I had to have the mirror re-attached, because after just under 40 years of use, the adhesive gave away.
If I recall correctly, there was also a basic maintenance service a few years earlier as well - just because I thought it was time.
The significance of the date of the photo? It was when I sent off for processing my very last ever shot rolls of Kodachrome. A lot of Kodachrome went through that camera!
Cameras are tools to be used and enjoyed!