oly wrote:
Answer: There is no good reason except tax
evasion or drugs.

No. In Europe it's not always usual to pay with a credit card. So you
need another payment method - what, if you want to buy a car?
I bought twice in my life a car with cash money. The first time I
needed DEM 10.000, I got those money in 500- and 1,000-DEM-banknotes.
The next car I paid in cash, too - 24,000 DEM. I got 500- and 1,000
DEM-banknotes, too.
My dealer didn't accept any credit card (because he have to pay fees
for accepting credit cards, afaik 3%) so at 24,000 DEM it's a fee of
DEM 720!
Using a cheque? What if I don't have this money on my account?
With cash money you can pay, everytime at any place in the world.
Ok, nobody will buying a car every day - but sometimes it's useful to
have EUR 200 or EUR 500-banknotes. If you're buying electronical things
like computers, tv-sets and so on - some dealers doesn't accept our
"maestrocard" or there's a smaller limit on the card.
By the way - the biggest denomination in the world at this day will be
philippines Pesos. 100,000. Ok, it's a commemorative banknote with no
circulation. $10,000 approx.
But in Singapore and in Brunei there are banknotes with a amount of
10,000 Ringgit/Dollars. $6,000. And if you're knowing the right people
- they're using those banknotes...