Random Fact:
France is the only non-major-petroleum producing country in the world that is a net energy exporter. The sole reason being their reliance on nuclear power, which produces enough extra energy to sell to Germany, Belgium, etc.
I wonder if the fact that we yet didn't have a significant problem with our big number of nuclear installations would have to see with the fact that this is in the hands of a monopolistic public company, so a one which don't have to care (or less have to care) about profitability, I sincerely wonder...
Well, outside of the safety question, which is a serious question, as far as I know nuclear energy is reliant on some raw materials which are in pretty limited quantity on the planet. So if everybody goes nuclear, it won't last a lot of time...
Personally, I strongly root for nuclear fusion, a technology still in development, but if ever it worked, the perspectives of development could be huge to say the the least...
That said, I also strongly support the renewable energies, and especially sun, the future of this one could be good too...
Fusion continues to be some decades off. It's theoretical promise is belied by real and difficult challenges to make it work on a commercial scale. However, there are other materials, particularly thorium, that may be developed into future nuclear fuels.
Actually, somewhat more promising in research into cost effective superconductors.
Its amazing that very few people are aware of how much electricity is lost in transmission.