First of all, in every country, there are a lot of extremists, whether religious or political, and I’m not even religious—I consider myself an atheist. Second of all, you just visited, but I live here. You can't underestimate the work and effort that most immigrants contribute to Europe; for example the health system in Germany would collapse if they left. I have more than 10 close friends in Germany, and all of them are doctors, including my wife. Lastly, most of the problems and chaos in the Middle East are due to Western interventions and manipulations. You can search and read about the involvement of the American government in Iran over the last 80 years (it won’t cost you anything to read a little).