> Another argument is that women are working and do not have time to have kids.Isn't that a valid argument still (despite his Swiss semi-counter-example)? Many jobs are complicated these days and require education + experience, making it very hard for women who want to work and become economically independent to have kids early in life; when they are most fertile.
I also think his Swiss example is somewhat misleading, since he argues that Switzerland has few women working (56%), and also a low birthrates (1.4). So at least 44% of the women have time to have babies, then Swiss birthrates should be high. But a friend of mine is from Switzerland, and his wife stopped working after they had a child (she has a PhD in biology as well, so highly educated). Schools typically send children home for 3 hours in the middle of the day (lunch/siesta or whatever you want to call it). Somebody has to be home, and that very often ends up being the mother. And after you've been out of the working life for a long period of time, getting back can be difficult. I.e. it could be that one of the reasons the Swiss women are hesitant to have children, is that they know that it will most likely end their career; so the implication could go the other way.