If the argument is between storing nuclear waste and dumping it, dumping it probably has long term ramifications. If we can safely store it and dispose of it in a way that isn't damaging to the planet, that's a plus. Besides, it would provide a decent number of jobs as these sort of facilities would need to be manned.
Storage of nuclear waste is economical. There is not a cost that is too great to protect the lives of people. The nuclear bomb is an endanger to society as it is known and the waste only ruins the environment unless stored where humans do not have as an habitat