In 2006 already Baroness Ruth Deech, the former chairwoman of the Human Fertilisation and Embryology Authority in the UK explained, that it is far more ethical to choose an embryo before implantation, than getting pregnant, deciding there’s something wrong with the baby and then aborting it.  Mainly it is the duty to impose the right restrictions that would enable a distinction on what is necessary for a normal lifestyle and where to draw the line for genetic predispositions (so for example to not abort or not implant babies with genes for obesity).  Also it is in the human nature to abort fetuses from the uterus if they are not healthy, it is a help to the natural process. Because during every cycle of a sexually active female fertilized eggs if not found to be healthy enough to survive get aborted naturally (1).  1. Head to head: Genetic screening, 05/10/2006,  , accessed 05/23/2011