Most IVF embryos fail ("die" in this framing). What's the bright line between good faith health care and "you killed my baby"? "Death" is pervasive in this wo

Most IVF embryos fail ("die" in this framing). What's the bright line between good faith health care and "you killed my baby"? "Death" is pervasive in this world. If you really believe in wrongful death here, why enter the treatment to begin with knowing how many are likely to be lost? I just don't see how you square this at all.