I'm not an asshole(maybe I am), most fat women I know are some of the nicest people I know, but if they ever approached me about wanting a serious relationship I would be disgusted. Not because their fat is physically unappealing, but because their fat tells me a lot about their lifestyle. Their fat tells me that they most likely don't give a shit about their appearance, they most likely don't care about their health, they most likely aren't physically active and are probably couch potatoes, etc. Mostly negative shit, and that shit disgusts me in the same way women are disgusted by men who have horrible hygiene, dress poorly, etc. This is not hatred towards fat women, it's simply disgust at the reckless lifestyle fat women engage in.

"What about fat men???"

They're already viewed as negatively as men who have bad hygiene, so it's not worth addressing.