by using medicine, and technology as a whole, to extend the lives of people who are not "strong" it may seem like we are weakening the species but in reality we are strengthening it.
it strengthens us by strengthening our technology which is humanities strength. our technology has separated us from the rest of the animal kingdom because while other animals adapted by changing them selves to fit the world we change the world to fit us. this has caused some problems but we are learning to use this ability responsibly.
in fact our technology is reaching the point were it seems the next stage of human evolution with be brought about by our own hands whether from genetic engineering, cybernetics, some other technology, or all of the above. this could lead the several different species of human.
