EU finds out the hard way that not having had energy independence plus a weak/non-existent military relying mostly on the US, has costly second order externalities that voters never think about or factor in their decisions(I'm European).
The best way to have peace is to always be ready for war. Being a non-armed hippie pacifist nation sounds good in some utopic fantasy world like the Smurfs, but in reality it only invites aggression from powerful despots like Putin and Xi and even your strong ally, the US, can exploit your moment of weakness and security dependence on it, to push its own agenda and trade terms on you.
After all, whenever EU falters, America gains: https://www.youtube.com/watch?v=jE-E1lQunm0