I've been thinking about this for a while, and I have come the the conclusion that medicine and technology in general might actually harm the human race in the long run. So many diseases and conditions that would have once been fatal are now either curable or treatable. Type 1 diabetes is a prime example.
What once would have ended the genetic line of individuals with a fatal flaw in their genes, now gets passed onto children who have a greater chance of being T1 diabetics themselves. Over time you would theorize that rates of T1 diabetes should increase if for no other reason than the fact that more adults are living with T1 and having children (and they are).
I'm sure there are many other conditions that historically would have decreased an individuals chances of bearing offspring that have since been overcome. Something as simple as the invention of glasses has probably made the average vision of people today much worse than say 1,000 years ago.
Is there a (morally acceptable) long term solution to this? Maybe genetically identifying and changing the specific genes that hereditary conditions is the best hope?