Is this even possible? I believe that with the advances in genetic (I use the term broadly) science the human race has gained a credible means of insight into the how and why of many inherited diseases. If eugenic practice was a voluntary undertaking where, regardless of one’s race, class or gender, the state offered equal access to all to discover more about their genetic predisposition, so that they can choose if they want to breed, that would be a good thing to eliminate some diseases.
There are many many issues with this utopian view of choice being in the hands of the people. There are many issues and to touch on a few: Firstly, wealth is an issue. National wealth in the form of countries means that this would only be possible in some parts of the world. In others the richest could do this and the poorest could not even dream of it. Secondly, education is key. What is the point of clutching test results that you are unable to contextualise, analyse and render you liable to irrational influencers such as theists or racists? Thirdly, unless there exists (and there still doesn’t) an equality of the sexes then the more powerful, – usually us men – could exert a greater than 50% influence of a decision making process. Finally, until we look at ourselves as one human race then it is unlikely that eugenics will lose its Nazi/Racist/Sexist/Classist taint.
Eugenics is a fine theory for improving the health of the population but it is fraught with impossibilities that we, the people trying to improve ourselves, bring to it. Introduce me to someone who isn’t prejudiced. We are all prejudiced to a greater or lesser extent, so we are condemned to try and learn to be satisfied with who we are. Warts and all.