And then, in just the last few generations, everything began to change. Slaughterhouses and refrigeration insulated us from the necessity of killing our own food animals. Modern medicine began to cure diseases, and it became increasingly rare for us to die in the youth and prime of our lives, and nursing homes, hospitals, and mortuaries insulated us from the death of the elderly. Children began to grow up having never truly understood where their food came from, and suddenly Western civilization seemed to have decided that killing, killing anything at all, was increasingly hidden, private,
  
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