If we could make better human beings by knowing how to add genes, why shouldn't we?
Those very words were spoken by Dr. James Watson, codiscoverer of the double helix.
As Dr. Stock points out in his book, the genie is out of the bottle and no amount of legislation or religious sermons will put it back again. Some of the biggest opponents of germline manipulation are the very people who's research is helping to bring it about, namely those involved with IVF, somatic gene therapy for the treatment of diseases, and the human genome project.
We are on the cusp of a brave new world, it's too late to chicken out now.