1) If you look closely at the men with fat women, a lot of the men look pretty shit too. 2) If they are not fat, it's low self-esteem or desperation. The low self-esteem is self-explanatory. In European countries you see niggers from Africa fucking the grossest, fattest white women no white guy wants. Is it because they "like" fat women? Hell no, they fuck them, make some half-breed fugly ass kid and then split.  Basically if you're fat, especially as a woman, you are automatically low value on the dating/marriage market. Women's most valued asset -in any culture- is their outside appearance. This is often dictated by age, the younger you are, the prettier (more fertile) you are, the fatter you are, the uglier you are. Hence why feminists, i.e. people who want to change this fact, are usually fat and/or ugly. They want to change market values so that they are more attractive to men, it has zero to do with "supporting other women". For a guy, it's not the main criterion for being a good catch. Men that have high market value need to be successful and have power (which entails the ability to provide), looks are not primary. Therefore, age and weight, which remember - correlates with superificial attractiveness, are not as necessary to catch a mate. So you need to ask yourself: why would a guy take something lower on the market? Well, he has low market value himself, but you might not see it at first glance. He's a shitty provider, is unsuccessful - behind closed doors, he's probably not a great husband. Otherwise he'd have a better mate. People tend to choose their long term partners who they believe have more or less equal market value as them.