That it hasn't happened yet doesn't mean that it couldn't happen in the future. We have never had a worst case event but we do know pretty well what the consequences of a worst case event could be.

The worst case consequences of Chernobyl were stopped because people literally risked their lives to prevent it. The fire was put out, the steam explosion was prevented, and countless lives were saved as a result.

Even so, many countries spent billions, over several decades, to minimize the consequences. As far as 2000 miles away, animals are still to this day fed special foods and managed to avoid prolonged grazing in contaminated areas.

Think about it for a second - over 2000 miles away, almost 40 years later, this still requires active management. Despite best efforts to handle the situation when it happened.

Now consider that every reactor carries it's own copy of the risks, and they only generate around 10 TWh of electricity per year.

That's just way too little electricity for such a risk. It makes no sense.

Meanwhile solar and storage is deployed at a rate equivalent to a new reactor every month as we speak. Faster, cheaper, and comparatively risk-free.