[robbrown451]

Ok, well if you want to do your part to contribute to the genetic excellence of the human race, don't use medicine. If you get an infection, instead of using antibiotics, just let it kill you. Don't get glasses, just let your bad vision get you killed. How far do you want to take this? I'm sure you can increase the immunities of future humans by drinking out of puddles like dogs do. It doesn't seem to make dogs sick, presumably because all the dogs in the past with weaker immune systems died, probably with a lot of suffering.

I doubt you do any of these things, because you aren't willing to accept the low chance of survival-to-adulthood that typical wild animals have. It may keep their genetics in tip top shape, but is that really what you want?