So in the analogy it would be as if we left a stockpile of guns and ammo. I don’t think leaving a bunch of loaded guns around is a responsible way to hand the future to our children, especially since we can’t know what the future political situations will be.
https://en.m.wikipedia.org/wiki/World_War_II_bomb_disposal_i...
So let me reframe the question. Do you think it would be a good idea to store spent nuclear waste in present day Iraq or Syria?
The best way is to burn up these actinides in a suitable reactor.
Again, we do have big stockpiles of guns and ammo. We have bunkers full of artillery shells, missiles, and weapons. Where's the outrage over the dozens (hundreds?) of munitions stockpiles militaries have strewn across the globe? Again the question is, what risk does nuclear pose that we don't already navigate with other more mundane materials?
The nuclear material in casks is not _that_ dangerous because of its long half-life. So dirty bombs made from it would not result in a significant loss of life. They'll just result in a very expensive cleanup of the affected areas.