Utter nonsense. Giving one's kids positive attributes such as a high IQ is a bad thing? How about ensuring that a family history of high blood pressure isn't past down? These people are luddites who would feel right at home with those who attacked Jenner when he first burst on the scene.
Exactly right. How can preventing the carrying on of known congenital defects to a new generation be a bad thing?
If I can prevent cystic fibrosis, manic depression, cycle cell anemia, and other known inheritable diseases from passing on consider the benefits to my family and to the human race. If you have the means available to you how can you in good conscience choose not to give your child the best available start in life namely good health?
With in two or three generations these diseases could be history. I can not imagine families who have suffered the pain of these diseases not wanting to prevent them from being passed to their children.
Selecting the best available genes for your children has always been part of human nature. Technology has simply caught up with natural proclivity.