I've been convinced for a while that the reason this problem is not solved is that everybody is sure that the problem is not solved, and therefore nuclear is really hard, and therefore we shouldn't do research on nuclear, and therefore we shouldn't do any engineering on the topic of how to solve our waste issues. In other words, ultimately the reason is circular logic.

It's 2015, and we remain essentially stuck on 1950s B-Movie era stereotypes on how nuclear works, what it is, and how dangerous it is.