I paid 6 million in cash for my scooter, and you can imagine what that looked like. Upshot is I felt very rich and like one of those fellas in those rap videos throwing around money.

What logically follows is that the it should be codified that the limit should be raised periodically (yearly?) based on the inflation rate.

Getting gas at night in rural parts of the US without a credit or debit card is already practically impossible – there's nobody there to take your cash. Card-only restaurants, vending machines, shops etc. are already a reality in some countries as well.

I think we urgently need a semi-anonymous, cash-like alternative for low-value online and offline payments, because I feel like once we've lost the anonymity of cash completely, there's no way it'll be reintroduced in a digital equivalent.

The discussion around this seems largely poisoned though, with a lot of vocal crypto/libertarian takes on one side (often tangling the payment privacy aspect with monetary policy), and "nothing to hide, log everything, credit cards and ACH are perfection" on the other.

There was some discussion around the turn of the century that the introduction of the 200/500 Euro notes might impact the USD's status as the dominant "notes in a coffee can buried in the yard" store of wealth for the developing world, but it never went anywhere.

It is interesting that this seems to be a remarkable amount of faith in inflation being a managed slow-walk-- if you had Weimar-style inflation, any fixed limit would be blown through in weeks. Although, perhaps that's a secondary objective there-- if an economy with high paper-trail requirements starts to overheat, pinching the monitoring system might provide additional leverage.

It prevents crimes as long as the people who would be committing them know it’s hard to cash out. As a simple example, phone theft was much worse in the United States a decade or so back because a teenager could grab a phone, wipe it, and get hundreds of USD. It plummeted once the stolen IMEI database went into effect because nobody buys a phone which can’t get service. It didn’t have to go to zero to be worth doing – just getting the easy money guys out often makes a big difference.

Sure, but "follow the money" can be an incredibly powerful tool for criminal investigations.

> With over reaching AML regime there is a danger that it is used against political opposition, like it is already happening.

That's a concern I definitely share. I think there needs to be a push for a privacy-preserving middle ground between the complete two-sided anonymity of cash and some cryptocurrencies on one side, and the data privacy nightmare that's traditional electronic payment methods.