Neverminding that direct adoption often does have the adopting parents cover prenatal costs, regardless of how it 'should' be the fact is adopting is very expensive. For good reason childcare is expensive especially at the infant stage, and bio moms looking for aid often do get medical expenses partially covered by the adoption agency or state. And your uncharitable opinion on why people adopt infants notwithstanding (many older kids in the foster care system need special physical or emotional care that not every couple is capable of dealing with, and they shouldn't pretend to just because it's the ideal altruistic position. That's how kids end up back in foster care.)Adopting infants should not be expensive at all. There is no-prenatal care costs for the family adopting, of course. The baby is already born. One can also adopt an older walking child if they are not too selfish or impatient. Adopt even a child that is already past the nastiness of diaper changing and toilet training. Does one need an infant just to be able to take cute baby pictures? If you are really Christian, adopt a handicapped child. Of course, being of good financial means should be one of the requirements of adoption. Slum homes are no places for children.
And we aren't talking about people in poverty. By the time fees and visits and after care is done, adopting can cost more than $40,000 out of pocket. And that's before regular childcare expenses.
And anyway why are we telling disabled (infertile) and LGBT that it falls to them to be the adopters and fosters when they're not the ones causing the problem in the first place? Why not instead of punishing them we actively make it easier for those who want to adopt?