"How could that ever be a good idea?"
Actually, for the past 5,000 years it's turned out to be of great benefit for humans. And it's still the most cost effective means of energy for the world. If you think that nuclear is the way to go, talk with the people who experienced Chernobyl or the tsunami in Japan. If you think that solar energy is the wave of the future, show us where it's actually a viable source of energy on a large scale.
Oh yeah, you're going to bring up global warming and climate change. I was just reading an article about how climate change killed off the greatest prehistoric civilization in India, one that existed 4,000 years ago, when human influence on the climate was zero. And yeah, I know the dinasaurs were killed off by climate change too. Those prehistoric Indians and dinasaurs were just burning too much gasoline.