People in general are quite comfortable ostracizing, making fun of, or discriminating against the obese because there is a strong unspoken belief in our society that fat people deserve to be treated this way. read more
Fat isn't necessarily the problem; in fact, research shows that the fat content of our diet has actually gone down since the early 1980s. But many low-fat foods are very high in calories because they contain large amounts of sugar to improve their taste and palatability. read more
MANY very large people make more difficulties and so probably individual obese people catch more negativity from normal-sized people. That's why the obese seem to get more abuse from the general public than smokers do these days, so I disagree with the premise of the question. read more