Human Genetic Engineering
Personally, I think that a far more interesting question is whether it could be stopped.
I mean, there are already plenty of parents out there who will spend any amount of money and go to any length to give their children as many advantages as possible. Today, this includes finding "perfect" sperm or egg donors. And once human genetic engineering becomes possible, does anyone think that these parents could be stopped?
Even if the United States and the European Union prohibit it - there will always be some nations who will either refuse to outlaw such a potentially lucrative business, or simply ignore what goes on within their borders. And then the genie will be out of the bottle - interested parents will simply go there, and return once the altered embryos have been implanted.
What are your thoughts on this?