[zeroclip]

Monero, zcash, aztec, tornado cash all work pretty well. Could you link to Monero's current vulnerabilities? There have been some known and theoretical issues with the privacy of Monero and Tornado Cash but it isn't a monthly occurrence. How are any of these protocols less secure than sending dollar bills in an envelope?

Sending money with a UK bank or PayPal is the opposite of privacy preserving. The convenience of it is fine for UK to UK and EU banks, not great for private, secure, instant and international payments.