If Goldfinger were smart, James Bond would have died with a bullet in his head.
Instead, he had to pussy-foot around and try to scare Bond and say "No Mr. Bond, I expect you to die".
BTW, that's true for every single villain in the Bond universe. Instead of shooting him when they had him, they put him in some sort of torture chamber, leave him alone, only to allow him to escape with some gadget invented by Q.
