What I have never liked about nuclear fission as an energy source is the fact that it leave peices of the world uninhabitable for hundreds even thousands of years when things go wrong and wrong they do seem to go. On top of the catastrophic failures they leave us with the low and high level waste that needs to be put somewhere safe for a very very long time, for high level waste there does not seem to be such a place.
These problems have done destroyed public trust in fission inspite of the fact that new safe less waste producing breeder reactors exist. Other than in China almost no new nuclear reactors have been built in the last 20 years and I doubt any will be.
Fusion is that magic technology that is likely to elude us for at least 1/2 a century more and who knows just how safe it actually will be until we actually build the a commercial one and operate it for awhile.