I love nuclear power and know a lot about operating them, however:
1) It's expensive. Very very expensive.
2) It's dangerous when not operated properly, and I don't trust commercial interests operating hundreds of these due to this reason.
3) It's bad for the environment, both the mining to get the uranium and all of the processes to turn it into fuel.
4) There is no answer for spent fuel.
Whereas with solar or wind you can basically remove #1, #2, and #4, however you still have to mine and process the materials.
Anyways, nuclear will be great for some niche uses, I am sure, but it isn't the answer to our green energy prayers.