they know that the engineers strive to make it safe but the management strive to make it profitable; I don't even blame them for that, that's their job and even one could say their duty. But this means that accidents, leaks and spills are bound to happen, and the problem with radioactivity is that once it's there it's here to stay, people understand that pretty well in my opinion.
I think, an additional factor is that nuclear reactors require a huge infrastructures and are operated by huge hierarchies. I would think a small team of experts might be trusted with the inherit risks, because the channels of communication are short. But as is, nuclear power is unsafe -- not because it is technically risky, but organizationally risky. The same applies to all the other examples mentioned.