You know, in Archaeology, the first indication of civilization isn't tool use, it's when we can identify rituals surrounding the burial of the dead. At around the same time, we also start seeing evidence that communities are taking care of their most vulnerable - the weak, the infirm, the elderly. That they continue to care for them and keep them safe and fed is one of the very first indications of human civilization.
There's something very wrong when people start to say, "Well why don't we let the weak and infirm die off?" That we don't abandon the weak, the infirm, the elderly, and the sick is what makes us human. The kind of thinking and so-called "logic" behind such statements indicates a type of sociopathy that is detrimental to the human race at large.