I think there are often a lot of social pressures to have kids and it's just "what you do" in your mid-age. But I notice there are more and more people who aren't really interested in parenting, perhaps because there are indeed so many alternative opportunities for women nowadays.
Again, it comes off as kind of sad that people have chosen to have kids but come across as if they are more of a nuisance to planning daily life.
I don't deny having kids in Hong Kong, or any of these "world's most expensive cities", would be very tough, especially if you want the benefit of two incomes. But that's not the reality for the rest of the world...
I wish people would just be more open to considering alternatives to becoming biological parents. I think the 21st century needs a radical rethinking of what "parenting" means and alternative ways to fulfill those desires.