As someone living in the EU, I'm well aware of the EU's failings, but also of the successes, and I think we don't celebrate them enough.

Some things I really like:

* I can travel in a wide area with just my ID card (and practically even without it), no visa or passports required

* sending packages by mail is really easy and cheap compared to non-EU countries

* free mobile data roaming. Not such a big deal for me (but very convenient), but I have friends that travel a lot or are at home in more than one country, for them it's huge

* no need to exchange currencies when visiting lots of places (though not all EU countries)

* my health insurance mostly works in the other EU countries as well

* pretty strong consumer protection laws

* We've been living in peace for quite a few decades now, awesome! (And that's not how it used to be in central Europe, historically)

Note that national politicians often take credit for things mandated by EU, and put all the blame on the EU, so that kinda skews the public discords more negative than it should be.

Just one more data point: only one country has left the EU so far, and it seems they've come to regret it, mostly. Lots of countries have joined the EU since its formation, with more in the pipeline. Would that be the case if negatives outweighed the positives?