Genetic diseases are escalating in direct proportion to our ability to make them non-fatal, of course. Medicine operates in direct opposition to natural selection, preserving those who would not otherwise survive. And its the price we willingly pay, because evolution is not a moral code - not a prescription of how we should live - its simply an account of our origins.<quoted text>Longevity is just one factor. Why not also consider the abundance and alarming escalation of genetic diseases?
As we have chosen the path of preservation for ourselves and our loved ones through medical intervention, so we will continue. And the day will come - its already here - when intervention at the level of the genome will do humanely what nature always did with utmost cruelty.
I guess you will go on a tirade about eugenics after I state this so openly. Yet like all knowledge it could be used to serve good or evil ends. I personally cannot see an issue with removing genetic susceptibility to Huntington's or breast cancer from future generations.
And still, this does not alter the fact that if humans are like animals tested to date, the reintroduction of natural selection will restore fitness, falsifying Sanford.