If you don't have any genetically-afflicted ailments, hell if you're still a healthy 18-35 year old, then I'd say maybe layoff on the moralizing about the some imagined pure beauty of letting "nature" take it's course with the human species.
Presumably you have seen the movie "Gattica", if not I can recommend it.
Imagine that we figure out the genetic sequence for total memory recall. It isn't an "illness" it is a feature that some people have. And perhaps the procedure costs $2M to have it done. Further assume that is a price that "upper middle class" people can afford to have it done for their kids. Now you have thousands of kids who are artificially "better" for jobs than unmodified kids. How do the unmodified kids compete?
It is just a hypothetical of course, there are dozens of things that appear to be genetic that give people an advantage over their peers. Unequal access to such things has always been a force for stratification in the world.
