When it comes to their reproductive habits being “disgusting” I have to wonder why you would say such a thing. This demographic situation is of our own making. The problem isn’t that they are having too many children, it is that we have become convinced that it is irresponsible to have more than two children. Whatever happened to “be fruitful and multiply?” Chesterton talked about this modern superstition long ago. We are doing this to ourselves. The Muslims are a symptom not a cause.
Their reproductive habits are disgusting for several reasons. I don't know if you are aware than many European countries allow Muslim men to bring in more than one wife. That is disgusting. They marry their cousins and produce a higher than average number of disabled children; families are dangerously inbred to multiple degrees. That is disgusting, IGNORANT AND CRUEL. The women are treated like brood mares, not like human beings. That is disgusting. They produce more children than they can support, and take advantage of Europe's suicidally generous welfare state. That is disgusting AND parasitical. People should not have more children than they can care for responsibly. Children are not expendable, and they are individual souls. I don't have a problem with big families, I have a problem with broods produced by multiple wives, who are themselves treated as property, not human beings, and that are dependent on state support.
That said, I have been an admirer of Chesterton, who if I remember right had no children, since I was in college. He said: "Tolerance is the virtue of the man without convictions."