Nuclear is the ONLY gigawatt scale dispatchable very low carbon source of electricity humans have at the moment, other than hydroelectric damns but we have used up pretty much all available capacity. If you refuse to use it then you are going to have to burn coal or gas instead. That is why Germany emits 6 times more CO2 per KWh than France.

https://www.statista.com/statistics/1291750/carbon-intensity...