Why are we doomed?
Oh I dunno - let’s start with this!
http://singularityhub.com/2011/09/15/sperm-donor-has-fathered-150-children/
the donors sister contacted Tyler and his mother not to help Tyler meet his father, but to tell him there was a good chance that he had a genetic heart defect. Tylers biological father had almost died at the age of 43 when his aorta ruptured. Two of the mans brothers have the disorder, as well as his mother. And by the way, the family has a history of a connective tissue disorder called Marfans syndrome. Tylers biological father had never told the three clinics at which he donated sperm of his genetic conditions. His sperm has been used to father at least 24 children, yet he was never required to update his medical history with the clinics.