Nabokov's Dilemma

Slate have reported on the fraught case of whether Dmitri Nabokov should destroy The Original of Laura, Vladimir Nabokov's last unpublished work, in accordance with his father's wishes. Apparently a decision is imminent.

I don't think I could decide, and don't blame Dmitri for swaying to-and-fro over the years. I do have to wonder though, why didn't the great man destroy it himself?