As always in life, a brown shoe will not fit all feet. The "some FTs" you are referring to are "some" and not all, and I reckon it's not the majority. While the problem is not only China,

Yes, I didn't actually mean that the 'some' were very few in numbers; but no, it wouldn't be a majority, because then we would be talking about all the students who just come to teach for a year and then hopefully go home to start up good careers. I would say that there are many FT's, and probably the majority, who do not have the bad experiences you have had in China; although, they probably leave with a few complaints. As for the FT's who really need China, I would say they are very great in number; and even some disgruntled ones in their ranks.