Darwin himself expressed some concern regarding such negative selection:

“[We] do our utmost to check the process of elimination. We build asylums for the imbecile, the maimed and the sick; we institute poor-laws; and our medical men exert their utmost skill to save the life of every one to the last moment. [...] Thus the weak members of civilized societies propagate their kind. No one who has attended to the breeding of domestic animals will doubt that this must be highly injurious to the race of man. [...] Nor could we check our sympathy, even at the urging of hard reason, without deterioration in the noblest part of our nature.”