This question stems from typical Polish behaviour
No, it isn't.
They can never admit that there is something wrong with their country or people when speaking to foreigners
Who are "They"? Your Polish friends? So you hang around with Idiots and complain about it? wow!
What makes you people proud to be Polish?
I'm not proud to be Polish neither I'm ashamed. I don't think that nationality should be the reason to be proud of.
Why do you feel you are the centre of the universe?
Why do I feel that you talk BS? Well it's obvious, isn't it?