Japan here. I use credit or cashless payments linked through credit almost exclusively. It makes it easy to manage family finances, as although there are no joint bank accounts here, you can have family credit cards. So one card for family expenses, and another for personal expenses.

Plus by default, credit cards in Japan are basically charge cards; they are paid off every month by direct debit. There is no interest in this case. You can also split payments over two months without incurring interest. Also, many credit cards offer bonus payment (typically workers receive summer and winter bonuses, card companies allow you to delay payment until that time without incurring interest).