Irish Caesar
Yellow Jacket
If we expand the use of nuclear energy more research can be done to explore ways to harness fusion power, or how to better reprocess spent material to provide a nearly infinite supply of energy.
I'm not sure expanding the use of fission power would expand the research into fusion power; while both are nuclear energy, the processes and hardware required are very different. I think we should definitely be researching fusion power, though.
We can reprocess material easily, the engineering and the science isn't the problem. The public policy is. President Carter decided that the United States shouldn't reprocess its fuel lest plutonium be extracted--a show of good faith to the rest of the world that America isn't making weapons from its reactors. As a result, we have vast amounts of perfectly good spent fuel sitting around which contains plenty of energy. We'd like to throw the junk in Yucca Mountain, but that won't be open for at the very least 10 years, so for the time being, spent fuel (or the fearmongering term for it, nuclear waste) is just sitting in pools next to the power plants.
This ties back into White Elk's comments about waste: we have plenty of fissile material sitting around, but we can't reprocess it, and it's not good enough to be put into a reactor as is, so it waits in a tank until it can be buried in the desert.