I'll answer for Greeks since i have family there and have seen what is going on. People simply cannot live, the suicide rate has sky rocketed and people cannot even afford to bury their dead. Two months ago we had to help a family freind bury his father because he had to choose between feeding himself or burying his father. Is it a war zone? Absolutely not but when there is absolutely no chance in hell for them to get out of the shit storm they are in and have a proper future the last thing they want to do is deal with with a wave of mass migration imposed by a union that should be helping them but instead they are too busy trying to guilt everyone out over migrants. These people have no future, their democracy counts for nothing and no one wants to properly address the issues down there and all of a sudden we have to worry about their problems while they rot with crippling austerity measures?
I can't exactly tell you what life is like for the typical Italian, German or British European but if the union collapses through this self sabotage Greece is a pretty picture of what is to come.