It's meaningless to speculate what might happen in a fantasy scenario a decade or more later, but we know for a fact that the UK would be initially hurt much more badly by no deal than the EU.
If anything, no deal should convince Eurosceptics in other countries that they just cannot sell this fantasy to their constituents anymore.
So no, Germans at least are not worried about no deal. I don't think anyone talks much about Brexit in the EU, except for Britain. I don't think anyone is worried at all.
In all fairness, why would anyone outside of Britain even care ? Whether Britain wants to stay or leave the EU with or without a deal is entirely up to them. The rest of the EU or the world doesn't (and shouldn't have) any kind of say on that.
And I would argue the opposite - the departure of the UK will leave the EU stronger. People will see what kind of clusterfuck it creates and they will learn that capital investors do not like such a mess.
While countries in the EU (especially Ireland - THE English speaking country successor in the EU) will enjoy the diverted cashflows into their economies.
If there is going to be any domino effect at all, it is going to be the resurrection of the Independence of Scotland which will most likely want to join EU at some point after that.
I would even argue that the EU will find happiness at least in a sense that they got rid of a member that enjoyed exclusive rights (no Euro, no Schendgen) which will make the path easier for the "United States of Europe" model.
Regarding the "afford" bit, the only party that can't afford that is the UK - the UK imports 55% of "stuff" from the EU, and exports 50% to the EU. The EU27 exports to the UK are 16% which puts it behind the US.
Finally, most of those anti-EU movements are a joke as they are tied with outsider parties partly funded by Russian money and some fake-news campaigns. Also, having Poland in that list is a mistake, Poland is one of the biggest benefitors from the membership, and there are no such movements at all. The only thing they are upset is the two-speed EU which is another topic altogether.
- http://time.com/4955503/germany-elections-2017-far-right-rus... - https://www.thelocal.de/20180522/russian-payment-for-afd-lea... - https://www.smh.com.au/world/europe/marine-le-pen-s-brush-wi...
The UK has a lot going for it. It might not be hunky-dory immediately after leaving, but there's plenty to suggest that the UK will do just fine in the medium to long term.
The alternative is betting it on the idea that giving a departing UK additional special favors won't accelerate centrifugal movements elsewhere in the union. An easy exit is the last thing the EU wants to demonstrate.
> It might not be hunky-dory immediately after leaving, but there's plenty to suggest that the UK will do just fine in the medium to long term.
The immediate term is what has the greatest impact in terms of a rush for the exits, though.
https://en.wikipedia.org/wiki/Tourism_in_Spain#Arrivals_by_c...
The UK leaving with no deal would be the beginning of the end of the EU. There is already growing anti-EU sentiment in Italy (4th largest economy in the block), Hungary, Austria, Poland. The UK leaving could set off a chain reaction which would either end the EU project or drastically reduce its size.
The EU simply can't afford to have the UK leave completely, because any measure of success it might have as an independent nation will compel other members to take the idea seriously too.