We bought our 13 plate Jazz ES in 2018. I reckon it had been laid up for a while, because it only had 13k on the clock after 5 years and the tyre walls were cracking up through lack of use. A new set of tyres later and I was driving the best car we've ever owned.
It's carried what must amount to tons of garden rubbish and building waste to various tips over its lifespan, it's taken us on short journeys and long ones ( a recent trip from Wales to Scarborough and back) and it has never let us down apart from one incident with a dead battery during freezing weather.
During the six years of ownership I've had times when I've become fed up with being tailgated ( because other drivers seem to assume that if you're driving a Jazz, you must be a flat-capped codger whose engine is speed-governed to 30mph, even when you're going much faster) and discontented with the relatively limited interior space. But my searches for another car with similar capabilities have always ended with the feeling that I really can't do any better.
My Jazz has now done 52k after 11 years, so still pretty low mileage. I will definitely change it this year because I want something bigger, but like you, nigelr, I'll always look back with affection on my ownership of a truly great car.