I think it’s important to repeat: you don't "have something to hide" when you put blinds on your windows or close the door when you're on the can or wear clothes.
Privacy isn't about having something to hide. It's not about keeping secrets. It's about you being the person who chooses what you reveal about yourself, and when, and to who, and the other word we have for that is "dignity". Your inherent dignity, as a human being.
Your privacy is the agency you have over your dignity.