I remember when I used to think that seeing my bones was sexy...I'd use a handmirror to check out my shoulder blades. Now when I see a woman with a bony back it sorta grosses me out...reminds me of the films of the concentration camps on the Hitler...er...History Channel. Why in the world would this be held up as some sort of ideal? Underfed young women? It's horrible.
The ideal of beauty ought to be one of fitness. Fitness IS sexy. I'll tell you what. Since I've gotten strong, the sex has been incredible. If I may be indelicate and give an example, take the much appreciated "69" position. With me on top, (which I prefer, so as not to have his balls hanging in my face), I used to have to use my neck, which would get really tired. So obviously this isn't something we'd do a lot.
Now I can simply flex my chest and tris a weensy bit and really go to town, and I don't get tired at all. Makes it a lot more fun! (Which means it happens a lot more.) Any man who finds skinny-fat women sexy is not thinking about what sex really is, or has no idea what it can be.