1984 Arrived A Little Late
Question: Do your windows have curtains, blinds, nets? Do you draw them at night? Why? Mainly to protect your privacy - you may not "have anything to hide" but some things are simply private, nobody else's business. It is the same with all of your most personal life details: you may occasionally need to reveal some details to officials for specific purposes, but do not want to have your personal life on public display.