Eugenics in a reality filled with humans has the potential to be either a dream or a nightmare. Personally I have espoused that we will face many issues ahead with regards to resource consumption and population growth, although theories and opinions vary on that score. If the amount of children people have becomes a privilege as opposed to a right, (governed by a country's laws most likely aka China), then the attraction of how to govern the population's 'health' would probably be fairly irresistible.
The problem is we tend to advance ourself technologically before we do ethically or ideologically.
I'm actually somewhat indifferent, but I am fairly adamant that there are a lot of people who I would not like to see get control over such a thing as eugenics should, (or rather when), it become more feasible. @SilentMusings would be chief among such people. Perhaps a system of interviews to assess the stability of the person would help.
A job interview to dictate the colour of your child's hair and eyes essentially.