Fukushima was the result of poor location and setup.
We are great at hindsight.
A nuclear meltdown will not create a nuclear explosion, thus no fallout. A fire plume that was exposed to radioactive material is not fallout. The Chernobyl incident was a lot of things and resulted in numerous safety features being implemented.
Sorry, English is my second language and I sometimes mean things other than what I say or write. Get's me in trouble with my wife sometimes!
Fallout is still possible and not to be dismissed. We always think we are so smart and safe until life teaches us that we are not.
And yes Murphy's law, but if we used Murphy's Law as a reason to not do something, we would still be sitting in caves with sticks.
That did not imply to be inactive but to thoughtful action and better alternatives. Our hands will be forced at some point. Uranium is not the most abundant resource on earth. If we continue to use them with a "Once Through Cycle" like the US does at the moment, we'll run out in 200 years. Let it be 300! Storage of the waste takes hundreds of thousands of years to decay. Oil, gas, coal, all is finite. Continue. Go ahead. Use it till you run out. Then what? Still, don't want to use renewable energy? Why not start the transition now, so that for once in this life, we come into a situation a bit more prepared and not have to huddle quickly to come up with energy solutions.
People in a few hundred years will thank us for having been the pioneers of renewables and tech will have advanced so that we can harvest, store and distribute renewables more efficiently.
Things that are done in small scale now are, well, scalable. Like every tech. Even large countries will be able to do it. Saying we can't, now that is going back to caves and sticks. Cave -> Settlement -> Village -> Town -> City -> Metropolis... Everything can be scaled, if done slowly, carefully but with determination.