No children is the poison pill of socialism, because you need a replacement population to keep it going. When Europe fell below its replacement levels, it doomed socialism.
A thoughtful analysis that is hard, maybe impossible, to disprove. FAFO
That and the powerhouse Germany deliberately committing economic suicide by eliminating reliable and large electric power systems in favor of expensive wind snd solar systems that are not reliable is bringing the end of European prosperity. It ocould have been turned around at some point but there is an economic steep downslope . Europe is on the edge of it or has begun the irretrievable slide. At some point, perhaps already passed, the decline must gather speed and the slope gets steeper. Britain, being a semiseparate entity could pull out of it but I believe the Mohammdan population there has grown too large, and without a sudden and probably violent expulsion, the East will subsume Britain. A collapsed Europe will begin its transition to arid and semirid Islamic sheep pasture with a population much reduced.