There is a clear intrinsic value ( and critical need) to avoid fossil fuels, nobody is disputing that. However to imply nuclear is actually cheaper today fiscally is not accurate as original commenter was saying, given variances[1] in plant construction between estimates and actual cost incurred, also uncertainty over long term disposal method and poor understanding of those end of life costs makes it very poor choice for policy making on selecting between clean options.

If there are no other(clean) options having equivalent characteristics (consistent base load, scalability, location etc) to augment solar/wind etc ( whose costs are very well understood now including end of life costs) , then we are not choosing because it is cheaper, we are doing it because there is no choice.

[1] All plants will have some cost deviations, but nuclear has much higher both time and cost deviation from plan estimates.