Nuclear is early midgame. In vanilla IC2 endgame you will run out of uranium, because your mining speed is limited. Windmills are endgame.
Ever heard of Breeders? It'll go a long way to stretching out your uranium supply. Besides, once you get your full Quantum, what is there to do that requires that much power?
why is nobody using power converters water strainer? it's still very cheap and you can pump water via a BC pump powered by 4redstone engines directly into it, which is enough to power 4 strainer for 8EU/t, a good enough output to get your first machines running.
Probably because some of us like playing with BC 3.x's Gates, and Power Converters is STILL not compatible with it? Or how about Power Converters not even being updated for 1.2.5, and is pretty much Abandonware at this point?
And a pump with four redstone engines is good enough for *nine* strainers, for 18 eu/tic.