"By allowing anyone in the eight relatively poor new members of the EU to come and work freely, Britain, Ireland and Sweden are putting these claims to the test. All seventy-five million people in Poland, Hungary, the Czech Republic, Slovakia, Slovenia, Estonia, Latvia and Lithuania are now free to move to Britain and work. Since wages in Poland are typically only a fifth of those in Britain, Poles have a big incentive to come and work here. If opponents of immigration are right, Britain should now be deluged with East Europeans and unemployment should be soaring.... But it isn’t. In fact, only 427,000 East Europeans have so far applied to work in Britain (many of whom were already in the country illegally) – and most stay only briefly: net migration from eastern Europe was only 48,000 in 2004.5 Unemployment remains at thirty-year lows, tax receipts are up and jobs that British people no longer want to do are being filled."
-- Philippe Legrain
Second, I'm sure there are some wonderful people in cultures where women (for example) are considered second class citizens. If I travel there and return with some feel-good anecdotes, I fail to see how that changes anything.
Another thing I wonder if they can take advantage of welfare? Can a polish person get UK welfare and NHS services indefinitely if they just move there?
Pensions on the other hand, I'm not sure about. I'm getting tax relief for my pension contributions, but maybe there will be a withholding tax if I leave without naturalising.
"The Flood that Never Arrived: German Open Borders Too Late for Polish Workers"
http://www.spiegel.de/international/europe/the-flood-that-ne...
It says:
"Since May, Polish workers have had the freedom to seek employment in Germany without restrictions. But the expected onslaught of laborers never materialized. Many Polish view jobs in the neighboring country with disdain, with Germans suffering from a reputation for stingy wages and lousy working conditions."
Here you had completely open borders between a poor nation and a rich nation, and most Poles decided to stay home or go to some other country, such as Britain, where they felt more welcome.
So there are many variables at work. It's not a simple invasion of the poor moving into the rich country.