The benefit to disease is suffering

[HighStickHarry_]

Suffering builds character and from that character comes societal net gains.

http://www.express.co.uk/news/world/747382/SCIENCE-WARNING-Messing-genes-WIPE-OUT-geniuses-earth

 

[NeekReevers]

Plagiarized from Paul, or James, take your pick

 

[HighStickHarry_]

Or a million other sources. Not sure they commented on dr'd dna.