Its exactly that point that we are currently working on with fossil fuel, and we are failing. But thats no reason to just blindly accept a few trillion in public risk and actual losses. "Since we are fucking up majorly already" is not a justification to burn through even more tax payers money. Differently put, just because someone steals from the shop and wasnt caught yet doesnt mean everyone should just start shoplifting. We cant keep adding more longterm problems for a quick profit.
We are currently looking for a replacement that doesnt externalize costs through environmental damages. I dont think nuclear is an alternative here today from a price point, and looking at the few times pro nuclear people talk about waste management costs, they dont seem to think so either. They mostly tend to give the same answer you did, which isnt an answer. Even if we were to decide today that nuclear would be the lesser evil, we cant do that without a cost overview. We have to at least understand what follow up costs we are leaving the generations after us and look what alternatives we have at that price point. And i dont think many taxpayers understood that Fukushima was an actual liability of more then half a trillion dollars and to how much that adds up to for nuclear all together.
And again, we are in an emergency situation with fossil fuels, and sure, we can talk about how much it would cost in liabilities and actual damages to switch completely to nuclear. It might be worth it for all i know. But if you arent even gonna give me an approximate cost to the taxpayer i will assume you are trying to scam me out of money. Unless we can have an honest discussion on a societal level about the realistic costs on taxpayers its an absolutely horrible idea to build even one more nuclear power plant. While i would love for the German nuclear power plants to run till the end of their planed lifetime to not waste the initial investment into relatively safe reactors, not allowing the building of new ones is the right decision as long as the costs are not transparent. If we should have learned anything from fossil fuel and all the other horrible side effects of technological development, we should at least have learned to make a proper technology (consequences) assessment (Technikfolgenabschätzung) and deliberately act on actual data instead of doing stuff that seems without alternative.