Your argument seems to be that we have a ton of already built unused nuclear capacity which just sits idle because people dislike using it.
If we're talking only about that, I'd be completely with you - let's continue using existing nuclear until their projected useful life ends.
However, if we're talking about building NEW capacities, even on purely economic basis, nuclear is not a good choice anymore in 2025 (while it was in 1970s) 1/