Hello Oldgreymare.
I do not dismiss nuclear, mining or oil exaction accidents lightly, they damage the planet and lives. I just stated that they do and will happen, we have to learn from them and improve safety at every opportunity.
At this very moment we do not have a viable alternative to nuclear power to produce the bulk of our power. Alternatives are being developed, but regardless of how much cash is injected into that research, a practical alternative is years away.
Japan in particular, being a power hungry economy, is between a rock and a hard place regarding nuclear power. The whole country is vulnerable to earthquakes etc., they have no oil or gas supplies, what are their alternatives ?
Regarding your comment about building on a flood plain -- If you lived in parts of India, you would have little choice. This is the dilemma for Japan, what else do they do, other than improve safety whenever possible.
To get the full picture of Gransnet members on this subject, you need to read several related threads, as the debate hopped around a bit.