through we always want something we don't have... I miss four seasons per year, miss the snow pretty much...
I had the same impression when living in Greece for one year. Now I miss Greek weather. Not many people emigrate to Poland, because for not EU citizens it's usually the same hard to get working Visa for Poland as for Germany and because of lower unemployment there and more advance economy it's easier to find a job with only English language knowledge in western Europe than in Poland. Not to mention low salaries.
Recently foreigners started coming work in Poland, because of recent outsourcing boom and extreme level of unemployment in southern Europe. But the number is small and they are mostly EU citizens.
Polish press wrote that in last years many Israeli started claiming Polish passport through ancestors (thousands each year). But they use it rather to work in the west or just for easier travel possibilities than for working in Poland.
I've also read that Poland is presented unfavorable to Israelis, so when combining that with lower salaries it's not strange that people don't immigrate here.