Re: At the risk of...
Now the technology may have improved, but there's lots of OLD nuclear reactors around. The Fukushima reactors were more or less end of life (reactor design from end 60s/begin 70s), but the Japanese government allowed TEPCO to keep them running for some 10+ more years.
On top of that the efficiency of current reactor types (which mostly use enriched uranium, which can also be used for nuclear weapons) isn't particularly high. There are some better options in development, like the much quoted thorium reactor, which should receive more attention. But we still have loads of old reactors around and there's NO simple and cheap option to get rid of them.
My biggest gripe is that the management of TEPCO, as well as the Japanese government, handled this disaster in a very unconvincing way. In my opinion there were some fishy things going on, long before things went wrong and the actions performed by TEPCO have not done much to actually solve the problem.
The biggest problem for nuclear is mismanagement (read: corporate greed) and sheer stupidity from a design point of view (nuclear reactor in an inappropriate location, too many reactors at one location, inappropriate designs, no way to decommission reactors safely and cheaply).
Nuclear can be a good, or even better, alternative for wind and solar, but only if we take into account these very important characteristics.