Recently I was told by an Entrepreneur / VC / EC that he wouldn't sign our NDA, after our discussion regarding products, services and general business plans for a StartUp.
Granted, we should have had him sign prior to the discussion, but it was acknowledged that we would be sending an electronic NDA to cover our discussion.
His contempt for our NDA was boiled down to: "I never sign NDAs and work with StartUps & Fortune500s alike, and quite frankly nothing you have told me is protectable. Sleep assured that your information is safe with me and my integrity."
Obviously, he wasn't the right fit for our StartUp and didn't believe in us at some level, but if you have No interest in spilling our beans, why not sign the document?