yes. Nuclear waste is a containable problem which becomes less of a threat with time on its own. Halflives, and all that jazz - it doesnt really take all that long before the waste contains less radioactivity than the original ore did, so if you take the long view, nuclear power makes earth less radioactive. Carbon, on the other hand, messes with the climate. Which is going to be just a tiny bit  more of a problem than blocks of glass in copper barrels encased in betonite clay, sealed with concrete and 120 meters of bedrock.