My grandparents had the same 3 VHS units in their house until they moved to digital tv.

We only ever replaced ours once.

A mate of mine had 4 in a stack for the purpose of duplicating and distributing VHS tapes illegally. I think 1 of them stopped working.

Another mate had one that wouldnt rewind faster than playback speed. But they just returned the tapes in dickhead mode rather than paying for a new VCR.