The second reason is bogus, the euro is valued as high or higher and we have 500€ bills.

I guess the Swiss Franc is not common enough. Other than that it would give some nice density benefit. 800 pieces of 1000 CHF would make 1M USD.

Source? That seems like it'd be more of a pain since you'd then have to convert it to your own currency which would be another chance at getting caught doing whatever you're doing

This is a bit of american movie fiction, allot of American media is made for American audiences and they know how much $1million is but not €1million or ¥1million.

There are countries where people prefer to get dollars Yes, they are usually on the poorer side or heavy tourist locations.

But a lot of criminal enterprises prefer cash to be easy to launder/spend locally, it is sort of inconvenient to have to exchange your money before you can use it. It would be kind of obvious that you are criminal if you try and buy a house/car in dollars.

The backpack point is very odd no? Other countries have 100 bills and some have higher denominations.

The above comment definetly was a bit anectodal, but there really aren't that many countries that use the USD. Its pretty much only the US, its territories and a few smaller south american countries. Canada and mexico maybe accept payments in dollar but don't officially use it.

Apart from that the USD is sometimes used in international trade, but that's more for currency conversion and not as physical money.

The only people that use physical USD outside of the US are American tourists with their america first worldview and mexican cartels.

Are you seriously implying billions of people are handling USD regularly? You realise other countries and currencies exist, right?

Do you know that each country has their own currency and even in physical form?