All complex technologies are really best understood as socio-technical systems. They depend on people and machines, data and economics, and, in the case of nuclear, especially fickle things like geopolitics and warfare. It's all about unknown unknowns, and not the engineering kind.
If it weren't for the unknown unknowns we are going to face in the 21st century from climate change alone (and not just the first order effects, but the second and third order effects on economics and geopolitics, which are basically unknowable), nuclear might make sense. But we have cheaper (solar PV + storage is cheaper, soon others will be too) and safer alternatives.
The easy test is this: if a country has a currency crisis, a coup, two back to back 1000-year storms, another pandemic, or any number of other major events, and the plant gets damaged and nobody shows up to work for a month, is everything going to be fine? Will someone break in and steal something dangerous? Will something dangerous leak out? With modern renewables the cost is low, the tail risk is basically zero, and the power is compatible with hard times.