increasingly disrupted families, more and more troubled children bereft of a normal, happy childhood and increasignly disturbed and unstable inter-personal relations.
Disrupted families, troubled children and unstable inter-personal relations can be observed quite often in Poland which is basically a homogenous, single-religion country. I'm not sure about the so-called "rotten" West in the 1950s or 1960s when the West was far less multi-culti than now, but I guess these were pretty common there, too. So I think you are completely wrong in attributing such sins to a mult-culti society only. The real problems is that our norms and standards are substantially different than theirs and that causes tension and trouble.
So have the Europeans in the "rotten" West decided to give in then? The novel "Soumission" by the Frech writer Michel Houllebecq clearly suggests this. And so do perhaps the examples given in this thread:
"what do you mean you've never dated a black? Then you must be racist"
"How do you know for sure you aren't gay if you've never experimented"
If these are true, this is quite embarrasing. In a way, such questions can be easily transformed into: How do you know for sure you aren't a killer, if you've never murdered anyone? And this would surely sound very alarming. If people start to feel embarrased with this kind of questions, it will be be a good sign that a major shift in culture and civilisation is taking place. But it is not very likely that a Muslim civilisation is slowly imposing itself on the Western world. It is more likely that a new kind of European civilisation is emerging and we are observing the first signs of this. Change is inevitable in the human world, but only God (or Michel Houllebecq) knows what path it will take.