See, my pet peeve with fatties (and note, I'm one myself) is their complete failure to recognize that A) They're fat and B) Nobody likes looking at them.
Most fat people are in complete denial about it. The ones that aren't think that it's okay, by and large, and that's annoying.
I at least try to stay realistic about this shit. I'm 28 years old, overweight, family history of heart problems and I have a very high stress job. The fact of the matter is that my life is probably half over at this point if multiple bullet points I just listed don't change.
And I think it's good to have that perspective and know it. I'm not doing myself any favors by trying to say that it's okay to be fat, die young, blah blah blah. I don't get why other fat people won't do the same.
That being said, the vitriol spewed by "healthy" people towards us fatties is completely laughable. We drive up your health care? Haven't you learned how these companies work? Once the price is up, it's up. You don't put the toothpaste back in the tube. Even if everyone at your company suddenly got in shape and quit smoking, there'll just be another excuse (admin costs?) to keep your insurance up. So yeah, that argument doesn't hold water.
I really think that the reason people spit so much hate on fatties is because it's the only social group in America where you can have a justification to shit on them without looking like an asshole. You can hide behind your own health beliefs, which you can't do for blacks, gays, women, etc-- you know, all the other groups that mainstream whiteys have classically used as a social punching bag. That's fine... I've got thick skin, and fat underneath it, but it just makes you people bitching look like little children throwing temper tantrums.