humanity however, needs to branch out, and quick. and windmills aren't going to help us make that jump to an interplanetary civilization.
Nuclear is cheap, very cheap. It was made expensive by political decisions, under the guise of proliferation suppression, but is actually a tool of economic suppression of potential challengers.
Germany, one of the most high-tech countries in the world, cannot make renewables work. Germany also has very electricity rates. France, on the other hand, builds nuclear, supplies Germany, and has MUCH lower electricity rates.
I guess no one told them nuclear is too expensive?