Are you serious? Every time I've been to Europe (I've lost count of how many times...) I've paid for many things with cash. I actually find it more inconvenient not to have cash there than in the US.
There are other countries (Iceland springs to mind, but I know there are others) where electronic payment methods are so dominant that someone can get along fine without having any cash.
Europe can't always be nicely generalized. There are plenty of differences between individual European countries.
Yeah, sadly. It seems like a lot of Germans associate card payments with having no spending control and going in debt.
At least credit card acceptance has improved since the fees were cut by the European Union. I'm still voting with my wallet and putting most merchants without card acceptance on my "ban" list.
>that someone can get along fine without having any cash.
UK probably as well, especially with contactless payments.