Well since nuclear plans produces radioactive wastes that has to be stored for thousands of years, i wouldn't call it green energy.
Also don't know about other countries but here in italy there are many reports of a rise of deformities and diseases near nuclear power plants in the '80, and after cernobyl we shutted all down.
We had a lot of incidents (even in japans) this years, luckly not bad as this, and now all north eastern japan is contamined (in tokyo, very far from the plant is already 10 times natural values). And we all know this could and still can get much worse then that.
Yes, we put shitloads of shit everyday in the atmosphere, but i think we can all agree nothing is nearly as bad as nuclear fallout.
Also nuclear plants consumes
a lot of precious water (and you can't use sea water) uranium prices are going up more then oil prices, and is really hard to get insurance companies to cover nuclear plants, guess why.
.
In fact without state subsides nobody would build nuclear plants and that tells a lot over nuclear power safety and profitabilty. Ofc they have the best safety measures compares to other eletric plants, if a refinery explode is a disaster, but if a nuclear power plant explode the risks are much much worse.
Also, nobody thinks about terrorist attacks? wars? How bad could be a 9/11 strike with an airplane over a nuclear power plant for example?