I believe the nuclear power industry largely started out as a way to justify world's largest nuclear warhead stockpile. I believe it was on a show from Netflix that discussed the history of nuclear power. It worked remarkably well.
Really!? You don't think that people were honestly excited about the most energy dense fuel known to man as a low footprint clean energy source? Your lifetime of energy in 1.5 soda cans of fuel! To me this is extremely exciting and totally unrelated to weapons.
I'm definitely a nuclear power proponent, and not a militarist, and I think that the militaristic-ly driven decision to prefer the uranium fuel "cycle" exclusively is the reason we're stuck with these shitty BWR's and PWR's, to the exclusion of anything else. Nuclear as it exists today definitely doesn't live up to the hype, and that's because the nuclear power industry is essentially frozen on 1960's designs, with incremental improvements tacked on. If the auto industry were as slow as the nuclear industry, we'd all be looking forward to next year's new Ford Model C.