Search engines might get reallllly good in the future. You're an idiot to say how many BTC you have, especially if they inflate 100x or more. Google caches everything, as do other crawlers.
Why are we idiots?
I suppose if you claimed to have 10k BTC, you might be a target. All it might take is some social engineering, exploit, or actual physical access. I know some digital gangsters who'd rob a guy for 10k BTC.
Yeah, but they have no idea whether your lying or not. And I know, Im a penetration tester haha.