Panorama/Harmony Testing

Why have I seen so many post about ladies being upset because their Obs will not order the test? These test were created to identify chromosome abnormalities (which happens to be a real issue with some families) who actually NEED the test done. Finding out the sex of the babies based on the chromosome is just an added benefit. Please let the testing be done for the purpose in which it was created, and if you are lucky enough to get it and not have a history then just be thankful. I think it's unfair to those who truly need the testing done, that you all think you are obligated to the test simply because you WANT to know the sex instead of waiting for it to be confirmed via ultrasound.