Over here, the lack of receipts has been nationally co-ordinated. It started with shops asking customers if they wanted one, now customers need to specifically ask, and shops cannot refuse. A receipt will automatically be issued if the shopping list contains an item with a notable warranty, such as higher value electrical goods. With cards, neither the item receipt nor the card receipt will be issued unless asked for, although either can be supplied on its own if required. The reason is quite openly stated to avoid waste. I am lucky, though not unique, in that my bank, in conjunction with my watch, gives me a tap on the wrist every time anything enters or leaves my account, with amount details, usually before the bags are packed at the checkout. (Buying fuel usually results in a credit, as garages pre claim the dispensing limit when paying by card, and refund what is not purchased, usually within 5 minutes). If we buy anything that might need to be changed, for size reasons perhaps, then having a receipt makes it easier.
Andrew.