I find it so strange that they insist on cash in this day and age.
It's much quicker to handle, especially for small transactions. Can be cheaper too.
the hazzle of first needing to handle cash, change and then the security, counting the money, taking the money to the bank....if time is money isn't it cheaper to just accept cards from the beginning?
Not always - they might not want people to use cards for small transactions, and indeed, many older people don't even have bank accounts here. Generally speaking, for the low value transactions that post offices usually deal in, cash is king.
As for NETTO and Biedronka, they expect families to stand there several times a week with lots of cash with the need to go to ATM's and such when it is so much easier to pay several hundreds at a time using card...? It is so illogical.
It's not illogical when you consider the commission taken by Visa and Mastercard alone - then you have to pay the bank on top. It can easily add up to 3-4% - which given that netto/biedronka customers are very price sensitive, it's a significant amount of money. The average Biedronka/Netto customer isn't spending hundreds either.
Poland also followed the German approach - which still treats credit/debit cards as being somewhat alien and strange. It's a feature of European low cost supermarkets not to accept cards - it's certainly not unique to Poland.