The issue with genetic modification is quite straight forward: we do not know where to draw the ethical line. While most of us would agree to prevent a kid from being born blind through genetic modification (assuming no harm is done in the process), the area becomes grey when dealing with such aspects as behaviour or beauty. And while grey areas of ethics are not new in human activity, it is the power of genetic modification that raises the stakes. We do not know what exactly we will be capable of in 15 to 20 years; or perhaps we do not want to know. The legal system is barely keeping up with the technological developments, as completely new possibilities arise which were not even considered as a possibility few decades ago.