I can understand. I'm not fat-fat, but the second I stop exercising for any reason, I lose all my muscles and all that's left is skin and fat, I hate it. Then when I try gain them back by exercising more, I just get more sad when I notice how I can't even do 1/3 of what I could do before.
Last night I wanted to massage the belly to help with stomach problems and it was all just fat and skin instead of what it used to feel like and it made me feel disgusted.
I think that when people eat, it should go to muscles, not become fat. And the other way around. Imagine if in order to be fat, you needed to go to the gym three times a week, and swim an hour a week, and bike 20 kilometers a week, but if you wanted to be muscular, you could just eat a kilogram of ice-cream.
But even more, I wish I could just magically alter the body to look and feel like I want.