I see your point. However, one problem is that it is pretty expensive to build a nuclear power plant, and I doubt that it would be immediately profitable. This prevents it from happening. Another thing, is where are we going to put the nuclear power plants? More would obviously need to be built. Nobody wants to live by a nuclear power plant. If they were put even remotely close to a neighborhood, those homes would lose a large amount of thier value. If the plants were too far away from society, the amount of energy that would be able to come from tehse would be decreased.