Yes they find the EU useful, no they are not about to give up their independence to a bunch of white hating globalists that hate them for having a culture and a people. The fact that EU is abusing and enforcing their destructive globalist agenda on countries that reject it means that Hungary and Poland will need to profit even more off it, if I could I would run the EU in the ground.

No one is going to invade anyone over degenerates. Germany is trash in term of military and so is Poland. France and UK do have power but I doubt' any of that will matter no one will start any aggression. Russia would defeat both France and UK at this point but that is a battle neither would want or care about.