It's all about adults' wants, not babies' needs.
Have to disagree with you.
Most reputable clinics will not treat the babies with anything but tender care. Implantation does not always take but that is part of nature.
The days of implanting numerous babies in the hope that one takes is a thing of past for reputable places.
And as someone who is trying to adopt I can tell you that it is expensive and risky. Adopting from overseas is even more expensive and risky.