Then there's a problem with nuclear fuel. The sources are mostly countries you don't want to depend on.
You are of course right with your assessment that nuclear is green, safe and eco-friendly. That's a hard one to swallow for a lot of eco activists.
Nuclear fuel storage is relatively straightforward, and volumes have potential to be reduced 30x through recycling.
In Ukraine, profits from all nuclear plants will cover damages, caused by Chornobyl, in 1000-5000 years IF nothing more will happen to Chornobyl or other an other nuclear power plant in those years, which is unlikely.
If we did the same with commercial air travel after the first disasters we’d still cross the oceans in boats. Car accidents kill 10-15 times more people every year worldwide than Chernobyl did but we don’t give up on cars either. Heck, smoking kills 7-8 times more people than cars every year (that’s 80-100 Chernobyls worth every year) and we still allow it.
The reasons are political not technically or financially insurmountable obstacles. We didn’t shut down nuclear in Europe for “green” reasons or because we can’t improve it, or because it kills too many people, but because enough Russian money went into politicians’ pockets to do this.