I think the general aversion to nuclear is explained in part by our tendency to overestimate the risk of rare, catastrophic events and underestimate the risk of everyday events. This is precisely why we tend to fear flying more than driving, although the latter is far more dangerous. Ezra Klein has a nice summary of this phenomenon today, "How We Get Risk Wrong":
http://www.washingtonpost.com/blogs/ezra-klein/post/how-we-g...