Over at The Personal Genome, Jason Bobe blogs about keeping biological data for non-clincial purposes separate from data for medical reasons, and lists some reasons. One, both physicians and regulators are already overburdened; two, restrictions on genetic testing presents problems regarding individual autonomy; and three, standardizing tests clinically puts an "unfair burden on individuals who may want to specifically avoid clinical implications of genetic sequence data."
GTO likes the feeling of going under with our eyes closed and nose plugged, too.