And yet we seem to be doing just that here in Finland. The for profit companies operating and building the plants have been trying to get permits to build more (and very likely are going to get another one soon). Even with the "failure" of Olkiluoto 3 they seem to find a way to do it in a profitable enough way that they (2 companies TVO and Fennovoima) want to build more.

There are no subsidies for nuclear power at all in Finland.

Also our permanent spent fuel storage site is almost finished and should hold around 100 years of spent fuel. Though there have been now some talks to not really use it for most fuel as it makes more sense to build breeder reactors and just burn that fuel into much smaller amount. If that happens it will fit much more then 100 year of spent fuel.

FYI, oil & gas industry receives a lot of subsidies (just google it). On top of that, nuclear is extremely regulated compared to oil & gas. For instance, we have to capture and store nuclear waste. That's not the case for oil & gas CO2 waste.

This is nonsense. We are basically using 60s technology that has some of these problems.

A modern reactor facility could be 10-50x smaller for the same output and that makes think like decontamination cheaper as well. Also, these facilities can run 100 years potentially, so the amount of money required for decommissioning is amortized of gigantic amounts of energy.

There is nothing inherent in nuclear that make it super expensive or unsustainable.