We have a lot of spent once through fuel rods lying around. Most of it is not in dry casket or otherwise so could be used in breeders with reprocess. Right now its about the only way to get its volume and lifetime down to manageable levels. If you add some neutronic fusion to the mix you could have sub critical fission piles that are safer to use to burn this waste.
Eitherway, we have got this waste and we need to deal with it. A all nuclear is bad don’t do it will not make it go away. Saying there is no problem leave it as is will also no make it go away as TEPCO has found out.