If money can buy it I think it won't do any good. Only the rich people will survive and the poor will be left to die and the Earth's population could be like 80% less in a matter of decades. Also, from a scientific point of view I believe everything is possible and could be engineered. Is there anyone that can convince me that there is no immortal genes created by now? With all the technology out there and the huge amounts of money making science go round every single thing imaginable is possible.