Nuclear waste can be reprocessed and reused. France has been doing it for decades. Or you could reuse it in a thorium reactor, which needs less reprocessing.

Another thing people forget about is that nuclear power is the main source for tritium, which we have a shortage of and it’s getting worse as more nuclear plants are decommissioned. Tritium has a lot of uses, but it’s most noteworthy use is fuel for fusion power. If decommission all nuclear plants, fusion research is effectively dead in the water