And what about the mid to low radioactive waste? Also let's not forget France does not have any long term storage facility for their highly radioactive waste yet. Why if it is so easy have they not managed?

Nuclear-level containment on geological timescales is potentially impossible.

Its not like you can put it into a dump and its "gone" like household trash. Radioactivity is ionizing, so it corrodes all materials and cannot be physically contained. The earth's crust is to porous (i mentioned the radon problem in another post) to keep it underground.