I disagree. If Communism ended 5 years ago that could be the cause but it was over 20 years ago. There are new generations which never lived under communism which show really high levels of pesimism.
I go visit countries like Hungary, Serbia and Croatia every year, as thats where I was born, and it is very foreign to me how people think the worst of every problem which comes up.
The moment their soccer team gets scored on, game is over...they lost. No chance of comeback...lol