Do you think Muslims will dominate the world again like they used before?

[Thal]

I think many leaders in the West are in denial about the threats posed by massive immigration from Islamic countries. They are so petrified of being called racist, and so attracted by the idea of being viewed as noble and virtuous in the press (they ought to call this the Merkel Syndrome) that they feel compelled to open the flood gates and let everyone in. At this point in time there are too many risks to have such massive immigration from the Islamic world, the religion is that dangerous.

Western leaders aren't in denial. They're just not paranoid idiots who listen to uneducated conservatives. (Except for the Norwegian immigration minister, Sylvi Listhaug, who is basically a fascist and a shame to our country.) They're not petrified of being called racist (in fact, being racist hasn't been this popular since the 1950´s) - they're intelligent, rational human beings who act on statistics and expert advice instead of random frightened morons who "thinks" this and "thinks" that. No flood gates have been opened, and no place is everyone let in. Just more right wing propaganda. Finally, the risks of immigration (there is no "mass immigration" into western countries, this is another lie from the hysterical right side) are minimal, and Islam as a religion is no more dangerous than any other religions. But congrats on being one of the people who dance after Daesh's music. You people sure make their goals easier to obtain. 

The costs outweigh the benefits. One of the costs is that even letting in a relatively small number of migrants (in the tens of thousands) results in a massive growth in the security and surveillance apparatus, which in turn cracks down on civil liberties for everyone and costs the taxpayers millions. What are the people getting out of this? Nothing. 

Holy crap, where are you getting these delusional theories from? "Massive growth" in security and surveillance is absolutely not necessary, and thus not at all a cost associated with taking in migrants. (And btw, the countries who have recently been taking in larger numbers (in the tens of thousands) have taken in refugees, not just migrants. In case you hadn't noticed, an entire country is still being bombed to shreds while we're sitting comfortably and safely on our asses, whining behind our computer screens about our first world problems.) 

And what are the people (I assume by "people" you mean those born in the countries taking in refugees, because naturally refugees (or migrants) aren't people) getting out of this? Absolutely not nothing. We get workers who are willing to do the crap jobs that nobody else wants, even though they're qualified for so much more. We get a more colourful, open and tolerant society (or we would, if the hysterical would calm down and be a little more accepting). We get people who are grateful. We get to sleep a little better at night, knowing that we're not complete assholes who turn our backs to those weaker than us, but instead are able and willing to help and support fellow human beings. You might call this "nothing." I don't. I guess we just have different values and virtues (something you appear to think of as something negative, for some insane reason).