Unlike flying, we’ve not shown nuclear energy to be sufficiently idiot-proof for many people to be comfortable with it. That and the fact that radiation is invisible, which makes it somehow almost paranormal.
But because it’s so spread and so normalised and not so bombastic, we don’t even consider it.
The number of lives saved by using nuclear energy is easily in the tens of thousands even with disasters like Chernobyl.
Although of course it has to be stated that the USSR moved to heaven and earth to solve the problem… and if they hadn’t, then the entire continent might be dead today.
Just being near a potentially aggressive bear is a bad situation.
Being near a car or a nuclear power plant is not a bad siuation.
Of course you should run in the other direction if you're close to a potentially aggressive bear.
Same thing if you're in the path of an out of control car, or near a nuclear power plant accident.
But you've got to separate the "probability of bad situation occurring" from the "severity of the bad situation when it does occur".