It's always easier to blame something external for all the problems (both in politics and for the individual).

"Look at all the bad stuff that X is doing to us! If we remove X, everything will be so much better!"

Same story with EU, you can look at Brexit case, seems like the majority didn't really understand all the benefits that EU brought, and instead focused on the negatives (which people tend to do). It's a shame really, all it takes is to look across the Atlantic to see what EU brought us:

• Consumer rights (Right to repair, USB-C standard on phones)
• Privacy and digital rights (GDPR)
• Employment rights (Right to disconnect, employee benefits, etc)
• Cross border trade within EU
• Food safety standards (much stricter than US)
• Environmental regulations

The list keeps going