While nuclear reactions may last millennia, nuclear power stations don't. They have too many other parts with materials like steel and concrete whose lifetimes are measured in a few decades. To really crack the nuclear energy problem that's where you need to focus your attention.

But overall I agree Steve. While I would love to have reliable renewable sources, we are still too far off to risk the next few decades without new nuclear. Whether the new contracts are the right ones is another question completely.