In Never Let Me Go, why don't the "donors" in the story just escape? Why don't they just refuse to sacrifice themselves by giving away their organs?

This is a great question! The truth is that we are never
given any indication at all of why the donors do not wish to escape or flee from their
fate. We are never told of any of them that try to do this - they all seem to except
their fate without even questioning it, as the central protagonist does by the end of
the story. I guess we are left to infer that this is their role in life that they have
been made for and prepared for and it has become such a part of their consciousness and
being that they can't comprehend defying their "purpose" or the reason for their
existence. Maybe the genetic engineers created them to be specifically subservient to
their fate and to not have the capacity to rebel.

Either
way, this is a really interesting question and gives us lots to think about. You might
want to post this as a discussion to get more responses.