Impressions from a trip to Germany

Dear fellow resident German citizens!

Is it really and completely normal for you that

• the stamp vending machines of the German Post still return the change in worthless stamps only?
• a post counter hosted in a supermarket and tended by the personnel of the supermarket closes at 18:30, even though the supermarket itself is open until 20:00?
• many shops don’t accept card payments even for larger purchases?
• half of the shops which do accept cards only accept certain cards, but no VISA?
• you are looked at stupidly when paying with counted cash down to the cent?