You're comparing London, Brussels and Paris to Warsaw? I think most people would consider the former three to be much 'better' cities and greater successes - Paris and London are considered two of the greatest cities in the world! Right there with New York, also a home for immigrants from all over.
Yes, I have. You are living in an Internet disinformation unreality - just like the nonsense the right wing craps out about how horrible and dangerous NY is. As empirical data, look up real estate prices and tourism to the three cities, and see how Warsaw compares. Remember, people in Europe can easily go to Paris or Warsaw; going to London is a bit harder.
And that is with massive disinformation campaigns against immmigrants and 'liberal' cities.
(No offense to Warsaw - maybe only NY and Tokyo measure up to London and Paris.)
