You close the curtains at night. Nobody on your street thinks you are up to something, and no neighbour knocks to ask what you are hiding. Closing them is so ordinary that it carries no meaning at all, and that is exactly why it protects you.
Money does not get treated that way.
Almost every payment you make lands on a record somebody can read. With a bank, the bank reads it, along with the companies it shares data with and anyone who serves it the right paperwork. With a public blockchain, meaning a shared record anyone can download and keep a copy of, everyone reads it, and they can still read it in thirty years.
Most arguments here ask whether you should be allowed to make your own record private. There is a better question underneath. What should the default be? When privacy is something you switch on, only some people switch it on, and the moment you do, you have told everyone something about yourself. Curtains work because the whole street has them.
Now the strongest version of the other side, and it deserves better than it usually gets. Privacy tools do help criminals, and investigators who used to follow money hit a wall. Some of those cases have real victims. Nothing to hide is not a stupid position either. Most of what you spend money on is dull, and the harm from someone seeing it feels theoretical. That argument has won most of the policy fights of the last twenty years, and it did not win them by accident.
What it misses is where the harm lands. The people reading your payments are mostly not investigators. One of them is the counterparty across the table, who now knows your margins, the gap between what a thing costs you and what you charge for it, before you open your mouth. Nobody needed a warrant for that, and nobody was catching anybody.
A closed envelope still leaves you accountable. Records can be produced when the law requires it. The argument is about who reads them by default, and today the answer is everybody.
Bitcoin has not solved this. Its ledger is public by design, which is a real cost and worth saying out loud instead of defending. What it gives you is the ability to hold and move value without asking anyone first, and the privacy work built around that is the unfinished part.
What would change my mind: a large payment network where records are public by default, and five years on, ordinary users report no pricing, safety or discrimination harm traceable to what their history showed. 








