It’s only ever done in extreme situations where the baby would not survive or be at considerable risk for the mother. There was a woman who had to travel out of Maine to NY to get these services because her baby didn’t have a skull. It’s a medical procedure for unfortunate things that sometimes happen in pregnancy. It’s not just cause someone is like “oh, wait, nevermind!” at that stage. If you are actually asking in good faith and not just antagonizing people.