It's the same in Sweden. My friends and I are all a couple of years passed the age our parents were when they had us. Out of 7 people who have SO's in my social circle, 0 have children. Why? Because they simply don't have the room. The housing market in Stockholm is insane, and even though most earn above average (most are in tech) they can only afford tiny 1BR apartments. Trying to raise a kid in such a place would be impossible. Unless you want to move out into cheaper areas, that these days are plagued by high-crime and is no real environment for a kid anyway, you're SoL.

Sure, one could move away from Stockholm into smaller towns up north, but then your career will suffer. Also not something most are willing to consider just as they've gotten a foothold in their respective careers.

The next couple of decades are going to be real interesting, and I don't mean that in a good way...