How? I literally just said there are women and girls who get pregnant who are not mentally or psychologically capable and they don't realize it until much later on and until shit gets really real, etc. There are cases where girls and women think they can handle a child or that they are ready for them, but either through abandonment of the father, or domestic violence, or financial insecurity, etc, they realize it's actually a terrible and dangerous idea. People overestimate their abilities and they overestimate how prepared their environment is for a child. Again, the ability to have an abortion later is there for plenty of women and girls and yet we're still seeing upwards of 90% of them performed before 13 weeks.
And there seriously are plenty of cases where men have convinced the women in their lives that they really want these children or they goad these women into believing that they can swing it, but realize much later on that they want nothing to do with these children. Shann'an Watts and Laci Peterson come to mind, and they were murdered due to the fact that these men realized they wanted no involvement despite initially thinking that they did. A lot of men actually first begin cheating when their wives become pregnant, become abusive, etc, because they also overestimate their interest in having a family, responsibilities, their abilities, and realize that they don't want children. It's not just women choosing, I'm sure in a number of cases it'd come down to their circumstances drastically changing for the worst out of nowhere, too. Again, fetuses can be anesthetized and pain wouldn't really be a factor. The very, very few women that might do it just as form of birth control, essentially, absolutely SHOULD NOT be parents, and you're more than likely dooming these children to a waking nightmare of a life if they do become parents. You've offered no real response to the fact that fetal anesthesia can be administered, nor have you acknowledged the stark truth that there would be no safety net for these children anyhow.