Parents vaccinate their children and have them eat a balanced diet because they want what is best for their children

Parents vaccinate their children and have them eat a balanced diet because they want what is best for their children. Thus every single day parents make choices for their children. Because of the Human Genome Project, parents may soon be able to completely design their children. They'll be able to choose eye, skin, and hair color; intelligence, height, athletic ability, gender, etc.. This is called "designer babies". If any, what do you find objectionable to it? Or do you think it is great to be able to choose these things instead of leaving them to chance or nature?