[novok]

Adoption is a lot of work, money, time and vetting, especially if you don't want a child with physical issues, to look like the parents or to go international.

Fertility treatments can be paid by health insurance and there is no 'parent vetting' process to delay things. Often fertility issues are one sided, so at least the children will be half of the couple.

[kelnos]

Oh, completely agreed. It's still a shame that it's not a better-traveled path, though.