Monets vs. Seurats: I'm A Jerk

My father is a fattist. I.e., he can't stand overweight people the way some people can't abide smokers. They say the apple doesn't fall far from the tree, so here goes:
I'm obsessed with weight. America is a fat, fat place, but living and working in New York City is somewhat of an anomaly, at least when it comes to women, because that's the gender whose trim, healthy members I'm enviously glaring at every morning. Everywhere I turn are model-actresses with youthful calves and slender hips. But when you look closer, these willowy femmes seem--I don't know, craggier. More lines on their faces. Worse teeth.
By comparison, in the odd event that I do see a larger person, it's more often that I observe fine grooming and much attention to detail in appearance.
Very unscientific, because I am in no way qualified to comment on this, but the psychology (mine and theirs) is interesting. Are the skinny, craggy people native NYCers, who have suffered more air pollution and are more hardened in general? Are the larger, better-coiffed women compensating by adorning themselves with manicures, highlights and carefully-applied lipliner?
As a tweener-hovering between normal and overweight, I'm just curious. And a bad person.
::Sigh::