What was the biggest culture shock you ever experienced?

i prefer cash, gives you anonimity and an easier overwiev of your spending

You can almost always also pay with card, but it's often only Girocard, not Visa or Mastercard. The fees of Girocards/Giropay are much lower, because it's run by the banks themselves, i.e. the companies most likely already have accounts at those banks, so they can subsidise the transaction fees with the banking fees the companies already have to pay anyway. Larger stores often accept credit cards, however.

Not true in cities, i havent had cash on me for at least two weeks now and Ive gotten by just fine

paper money is aight, but coins are super annoying