designer baby

I think that there is good and bad to these "designer babies ". In these 2 situations it is used correctly if it is used to save a life i think it is okay,but if it is used to just pick the baby that you want i dont approve of it. If they are just choosing the baby of their choice i think they are playing the role of god too much but if its done to chose a baby to save another child i thinks its okay.