The only reason nuclear is even viable today is because nuclear technokogy isn't as bad today as it was a few decades ago.

Every time we have a massive nuclear disaster the defense (a valid one!) Is that the disaster happened from a poorer technology that isn't used anymore today.

If we had built out nuclear earlier we would have had a lot more nuclear disasters.

The problem with nuclear is solely that by the time the technology became good enough that it could be used fairly safely it became way more expensive than almost all competitors including most other renewable sources.

And this is even before including the geopolitical limitations of nuclear. Would we be living in a better world if every country including countries like Afghanistan and Pakistan had easy access to nuclear.