I recently moved back to Sweden after living 4 years in Germany. I don't have any cards, and I don't carry a "smart"phone anymore; in Germany this didn't cause any trouble at all and I was far from alone. Much of the current Swedish society is currently closed to me, I know of three shops and one cafe in the (200k people) city center that accept cash. Some of it has been gradual but it changed dramatically during the…
I pay more often with cash today than some years ago, as a statement. Interestingly, if you talk about cash in Sweden the comments you will get tend to be very hostile. It's like talking about meat in a vegan community.
Though I must say Germany too is changing fast - 7 years ago most places didn't take cards, now most places do. And I've even heard of cash-less bars popping up in Berlin. So the change is coming there too, only a bit later.