I imagine that one of the difficulties is that a woman who gets pregnant and doesn't want to have the child finds that the process of pregnancy and birth is very difficult financially. It increases expenses, and decreases available time for employment which affects their finances from the supply side too.
Many people find that practical concerns, like finances, override any moral qualms they might have on the concept.
If the US ever gets a socialized medical system, it'll be interesting to see if abortions decrease and babies available for adoption increase. Pregnant people will still face a decrease in finances on the supply side because they'll have to take time off work, but removing the expenses could reduce the problems with the practicality of basically being an incubator for needy parents who want to adopt.
Many people find that practical concerns, like finances, override any moral qualms they might have on the concept.
If the US ever gets a socialized medical system, it'll be interesting to see if abortions decrease and babies available for adoption increase. Pregnant people will still face a decrease in finances on the supply side because they'll have to take time off work, but removing the expenses could reduce the problems with the practicality of basically being an incubator for needy parents who want to adopt.