Jachut, you basically reaffirmed how I feel. Thin is lovely and elegant. I have been back at ballet class for a year now, too, and we perform publicly, and ballet makes no secret of it's preference for thinness.
My weight history may or may not be unique and may or may not pertain to what my current weight should be.
Here is a brief history: I went from a 7lb baby to a normal to slender sized child. At 14 I thought I was getting fat and went on a year long 'diet' and (reached my height of 5'7 during this time) weighed about 110lbs. Very thin. After a year I lost discipline and slowly gained weight until college when I was up to about 180lbs. I went on another major diet and got down to about 120lbs. I maintained a thin to average weight until I got married and got pregnant with baby #1. I gained lots of weight while preggers and it came off reasonably well with #1. Then when my son (baby#1) was six months old I got pregnant with my daughter. The weight came on doubly fast and didn't do away. Three years later I had the band and a year after that I was at about goal (150s).
So I have not always been overweight. I don't know whether this matters. I sometimes feel like I am bordering on EDNOS but as was mentioned earlier, many overweight people have distorted images regarding body and weight. I know I do.
starryeyed