I don't believe in bullying fat people because of their weight, that's just shitty, but I hate it when people who are clearly overweight start attacking other people for not being attracted to them (specifically because of their weight) and acting like there's nothing they can change about their body. Yea, there's lots of things you were born with and can't change - being overweight is not one of them. Unless you have some kind of physical injury or disability that literally prevents you from eating right and/or doing any kind of physical exercise... but I guarantee you most of these people don't.

You don't have to be a supermodel cross-fit master to be taking care of yourself and staying healthy. Plus, even beyond the physical beauty aspect of the whole thing, being unwilling (or too lazy) to stay healthy and treat your own body right is not a positive trait. I don't see it as much different than staying on top of your own personal hygiene, or grooming. That applies to everyone, not just the fat greasy neckbearded guys that people love to make fun of.