I can't see the pictures either. Bummer. I was really hoping to see some differently sized Sims in this thread.
My size experience has been a little different. I was reasonably slender throughout high school but still taunted for being fat because I was not super thin like most of the cheerleaders. It affected my self-esteem as I was getting the same message at home. So, I started overeating when I got depressed and eventually was a size 5x. About 10 years ago I started eating healthier again and exercising more often and now I wear a small to medium. So, I know what it's like to be berated because of your size. It doesn't matter if you're skinny or fat or somewhere in between. It hurts.
That's why it's very important to me in my Sims game that there are Sims of all sizes. I love that my Sims don't judge each other based on size or color or sexual persuasion. If only the real world were more like that.
*edited so that the second paragraph makes sense*