You have to be absolutely blind if you can't even read history going back just a few decades, which makes it evidently clear that we have more motivation to work together than pretty much any continent out there. Doesn't help that we all know that the two world wars we've had so far, has come from our continent, so yes, we have a lot of motivation to work together.
Personally, living in the Baltics, even a flawed and somewhat fragmented Europe is better than being under a Russian boot.
So it's more of a "optimism and work towards a better future or perish" situation. That's an easy choice.
The only thing we need is to actually stop ignoring the forest for the tree and see that the world moved on beyond our petty local borders and we're lucky enough to have found a system where we're stronger together, to the point where we matter in the world and can't be ignored or pushed aside, while also protecting the core of each of our own cultural societies (langugage, history, ...), and only fools would let that go because they're too close minded to see it.