Erm, the cost/damage on the whole region (and not just Fukushima) is much higher than the nuclear power part itself. Let's not forget it's a once-a-millenium kind of tsunami that occurred there.
> Now I see that nuclear power is not only an ecological hazard but also a fool's business from the economical point of view
That's the best thing we have, right now. Good luck powering up cities and means of productions with solar & wind, from tomorrow onward.