Scully said: They have lots of money and probably lots of hired help. They won't be raising that baby, they have "people" to do that.
Bingo. It's much easier to have babies when money is no issue, where you can hire nannies to look after the kids while you go out and do whatever it is you need to do. If you don't have to worry about health costs, the costs of feeding them, clothing them and seeing that they get a good education, then you've just eliminated ALOT of the stress that average, everyday people have to deal with.
Still----I wish them all the best. Perhaps they felt that they wanted another baby after their son died last year.