“I don’t have anything to hide because I think I’ve done something wrong: I have something to hide because I question your judgement and motives.”
They’re fine giving you their info because they trust you. The problem is when the person seeking that information is untrustworthy – and some shithead(s) making their way into a company or government isn’t just possible, it’s likely.
Tell them to give all their sensitive personal information to someone that hates them. Credit card numbers, political beliefs, nudes, sexual preferences/fetishes, etc.
We still kind of owe you for everything you guys did in the revolutionary war.
Tell you what: when the time comes to fight the fascists again we’ll send your resistance movement munitions if you send us dope “uniforms” for ours.