Cheerful - re Never Let Me Go:
"The children had been brought up in a place that didn't tell them how to run away"
So? Nobody needs to be actually told that they should run away from harm, let alone how they should run away. Surely the meaning of "run away" is to somehow get far away, or even stay close but hide. Animals run away from harm. Hell, even insects run away from harm and I really doubt they learn that in an insect school on "how to run away from certain death" 
"It's hard to run away even when you have a plan or somewhere to go to."
Not harder than certain and painful death by missing multiple organs, I presume. Run, hide, figure it all out later. No gentle little school whose only claim to 'conditioning' is 'not telling them how to run' (what?
) is going to undo the 'fight or flight' reflex chiselled into all animals over millennia.
"It wouldn't have been hard to microchip them or something"
And then no sane human would stop until that microchip is removed, even if that means losing a limb in the process.
"It's no more implausible than soldiers on the western front walking to their deaths or women performing fgm on their children."
Soldiers go to their death either because they believe they are helping defend their country, fight for their way of life, etc or they know for a fact that they will be shot if they turn back. And yet many soldiers desert in every war.
FGM has nothing to do with voluntarily walking like sheep to one's own death.
"I agree that there must have been exceptions somewhere, but i think the book is about those who don't run."
There are no clones who run. If there are, why do we not know about them? Why is there no mention of anything of that sort in the book?
I find it quite pathetic that the book is so full of holes, so inconsistent and weak, that the reader has to try to come up with stories to make up for the author's laziness.