ReindeedBollocks I'M naturally thin, and I'd agree with you that men want curves. Or at least, quite a few real men don't really care what women look like as much as we're all told they're supposed to.
Society, media and culture, OTOH is another issue entirely.
it's about money.
In the past, frail pallid waif = poverty
Today it represents the moneyed classes (with or without a tan)
Under patriarchy women's bodies and appearance are used as bargaining tools, to please men's eyes, but also to be sold in exchange for financial patronage (be that work, as a model, or in any job, or marriage).
What this means is IMO that men have always prefered a woman who appears classy: it boosts their own status in the male hierarchy.
When food was scarce, a plump woman did the job. NOw that high calorie food is mainly eaten by people lower down the socio-economic scale, skininess is valued.
I also think the proliferation of images of pale, frail women is a psychological thing. At my local Chanel make-up counter, the latest model looks like a cancer victim, complete with headscarf. Pale, sickly looking women are "in" because healthy, energetic-looking women are threatening.
I don't think this is what real men want, actually, and I certainly don't think it's beautiful, but this is definitely what media culture tells us they're supposed to want
Youth is also the other aspect. Under patriarchy, women are split up into chategories of desirability: the younger, the better (in patriarchy's eyes)
Again, I don't think real men are like this- , but culturally, young women are the only type of women that men are supposed to find desirable. It also has the effect of divide and rule among women. The pretty/the unattractive, the fat/the thin/ the old/the young. I'm sure the psychological effects of all of this are far-reaching.
ISNT, fascinating what you said about the ideal being a 3 yr old's body