Considering the number of nuclear power plants that would explode without someone to take care of them. Not long after the one about 45 minutes from my house goes up. It would be a painful death. Even if I somehow survived that, there would be LOT of radiation that would be put into the environment. Yeah I'd die pretty quick from radiation poisoning.
Modern nuclear reactors use passive safety; meaning that the default state of the reactor is off and safe, and it requires work and power to get it running. When they enter a fail state, or the power is cut, they snap back to the off state.
I'd imagine that nuclear reactors have multiple safety features, including automatic shutdown systems etc, to prevent catastrophic events even in the absence of human intervention.
Over time stuff would likely still break/leak, but it would only contaminate the immediate surroundings compared to the big bang that would occur when failing fatally during operation.
I don't know, chances are high that I'd still move away from those places...