We are constantly told that the true key to happiness is limited to the size you wear. Frankly, that's the real problem here. What we need is more people saying it's okay to be your size, to love your body, regardless.
I'm not unaware that some men don't prefer us fat girls. They don't have to! It's not offensive that they don't. I'm typically not attracted to slender, skinny guys. I doubt those men feel offended and left out.