That's a terrible question. You may as well just ask "Hey, can you please slip up and say something incredibly stupid and/or offensive, so that I can have an excuse to end this interview? It'd be great if you could just walk right into this trap that's not-so-cleverly-disguised as a question whose answer isn't even vaguely my business. Thanks!"

EDIT: Oh, and I skimmed further and found this gem:

> I never let people opt-out of the question

What a pile of arrogant crap. You're interviewing a candidate, NOT interrogating a prisoner. Get over yourself.