I've been living a completely cashless life since Google Pay was released. Wouldn't go back. Germany isn't fully there yet, especially restaurants and bars, but we're getting there.
Here in Sweden they even changed all the bills and most of the coins in 2016 because they needed to be "modernized". Nowadays most stores don't even take cash and I know many tourists/foreigners complain about it.
It's just rdiculous that there are still countries in the EU that haven't adopted the Euro yet. That was also true for the UK but we all know how that went.
