Nuclear requires an extremely mature bureaucracy to handle the serious longterm risks efficiently. Here in the USA I'm just not sure our government is mature enough for the task. Every 4 years we may have someone come in to slash safety regulations or erect impossible regulatory barriers, not to mention all of our defense treaty obligations and their churn. Every year (or less!) our congress may decide to let the government shutdown and stop paying critical contractors. Trains carrying spent or unspent fuel may derail thanks to inefficient regulation. etc etc.

One of the massive benefits of wind and solar is that it can be scaled down to a size even a consumer can deploy. This makes it relatively resilient to regulatory whims compared to massive undertakings like nuclear. I'm not a nuclear engineer, but I suspect the recent emphasis on smaller nuclear plants has more to do with navigating regulatory hurdles and uncertainty than efficiency.

All that to say I am quite jealous of countries with mature bureaucratic regimes that can efficiently manage nuclear!