In what sense have humans become "monstrous" in Never Let Me Go ?

I think
that the social setting in which the clones find themselves might resemble a condition in which
human beings have become "monstrous."  Ethical issues of cloning put aside, I think
that the reliance and overreliance on the clones to solve medical challenges is where the human
monstrous element resides.  It seems that the society in which the clones find themselves have
given up on finding another medical science path that could alleviate the reliance on the
clones.  It is almost as if society has become comfortable with a group of people whose mission
is to be "completed."  This is monstrous on the level that normative society can push
another group of individuals into the "shadows" and away from public outrage.  Another
level of monstrosity is in how the newer generation of clones endures harsher treatment than
previous generations.  In the final analysis, anytime power is exerted in such a manner in which
silent resignation to one's fate is the only option, there is a level of monstrous behavior
evident.  It is here where Ishiguro's social construction raises some real and vital questions
about the nature of human behavior as monstrous and one in which questions have to be
asked.