Why would anyone want to worship a god that creates 1 in 10,000 fetuses without a brain, causing them all to die within the womb or minutes after birth, its not only a quality control issue but hugely distressing to parents, un-necessarily distressing to parents who may be avid followers of that god and wonder what the hell they have done to upset him so.
The cop-out reply is of course that we are not to question why, yet we are told by believers that a life is created by their god at the moment of conception and furthermore that Man is not to dabble in procreation whether to prevent or create it artificially - therefore we can only conclude that their god is totally responsible for every fetus, its well being, and its successful and healthy birth.
Clearly he is not doing the job properly.