system
A chat on subreddit /r/NoStupidQuestions
human
I would not recommend returning to that establishment.
gpt
It’s so strange to me, as German, that you need to pay on-top for the service at an establishment, because the establishment is too stingy. And if you don’t, it’s not recommend to support that establishment, which is somehow independent of their service, but it isn’t, because if you don’t tip, you shouldn’t come back. 

Mind blown.

That said, I tip 10-15% in Germany as well in restaurants, 2€ for food delivery and 4-5€ for grocery delivery. But it’s more of a want instead of a must.