To think it’s clear as day now that Brexit was a massive mistake and we need to rejoin the EU asap

[G3ran1um]

How can anybody still argue than it was a good idea?

But that was the whole point, from Day 1!!!

"We must build a kind of United States of Europe", Winston Churchill, 1946

The statement "Have you seen how badly the economies of all the countries in the EU are doing at the moment?" is not factually accurate as written.
The key issue is the phrase "all the countries in the EU." EU economies are not all performing badly, and their performance varies considerably.

• Recent data show that the euro area economy has continued to grow, albeit modestly and with significant headwinds such as higher energy prices and geopolitical uncertainty. (Reuters)
• Some large economies, including Spain, have been growing relatively strongly, while others, such as Germany, have faced weaker growth. France and Italy have seen modest expansion rather than outright collapse. (Reuters)
• Major institutions such as the IMF and the European Commission have downgraded growth forecasts, but they still project continued (though slower) economic growth for the EU overall, not a broad-based economic crisis across every member state. (IMF)

A more factually defensible version would be:

• "Have you seen how weak economic growth has been in parts of the EU recently?"
• "Have you seen how some EU countries have been struggling economically at the moment?"
• "Have you seen how the EU economy has been slowing amid recent challenges?"

These versions reflect that there are genuine economic difficulties in parts of the EU while avoiding the inaccurate claim that every EU country's economy is doing badly.

Also, I guess a good question might also be:

“what are the basic public facilities and services like overall in EU countries eg quality of life markers as compared to UK?” and of course they vary depending on the place, but in very general terms, taking France, Germany, Belgium as examples;

~ public transport is heavily subsidised and integrated and generally efficient
~ social care actually functions reasonably well although is facing staff shortages as in uk
~ social housing functions well but varies from 17% in France to only 3% Germany
~largely free or heavily subsidised education including tertiary education (this is very important in terms of social inclusion and equal opportunity no matter where you start out in life)
~ universal, mandatory healthcare provided through subsidized statutory social health insurance systems from good to excellent
~ most towns have good, subsidised public sports facilities
~ and a good public space/hall to hire cheaply for family and community events
~great advanced, highly regulated recycling and rubbish collection systems
~they each have robust, heavily funded police forces with strong personnel levels.

In other words basic, decent civility for the general population and needs of the individual citizen have not either been ignored or been placed second to commercial imperatives, as they have in many sectors of the UK.

I think the only area where the UK does slightly better is in its provision of accessible public green spaces thanks to its historically protected municipal parks and residential gardens.