I am not an expert on nuclear, but my gut feeling is we give up on it too easily. We need to add more precautions to prevent another disaster. The technology seems so useful, though, that it's a shame to abandon it altogether.
Unfortunately, Japan does not get as much sun light as Germany. The North Pacific is cold and the fog is very dense.
I still think my idea of a floating nuclear power station could work for Japan, especially in the inland sea and the northern coast along the Sea of Japan. After all, they did build an airport on the ocean, a floating power plant should be a piece of cake compared to that.
I do concur, however, that Japan is just too vulnerable to put land based nuclear power plants anywhere on land. As demonstrated at Fukashima, what can go wrong, will!