Well, (the following is all to the best of my recollection) to get the jump on anyone thinking nuclear is terrible: (not saying anyone here has, mind you) that whole reactor was a very, very unsafe design by any standard and the operators were forced by political numb nuts to push it outside of its designed parameters to run a dumb test, over their objections. The whole thing was a mess from top to bottom. Not that Three Mile Island wasn't a fiasco, what with the poorly labeled controls, control indicators being wired to switch position rather than actual valve position (yes, indeed the switch is in the right position but the valve is stuck!) but at least it was (comparatively) no big deal as far as the effect. And Fukishima with their coolant backup generators being under sea level in a Tsunami prone area.
Nuclear is actually the safest form of energy generation bar none. It's just one of those things that (like travel by aircraft) goes very, very bad in a very spectacular way when faults, mistakes, and human error do line up in a perfect chain of unfortunate events. And like nuclear, even with that being the case, it's still safer than traveling by automobile.