You're obviously just being a troll but who are you to say what mentality fat people have? I mean there are literally millions of them. They can't all have the same mentality just because they're overweight.
They are just dismissing the genetic component because its easier for them to criticize if its not based on that. But then you notice that some groups are naturally fat and others are naturally skinny. For example asian women are usually very skinny/petite and if you want to get most black women to look like that its impossible. So don't come with the 'its not genetics' bs.
Just to react to what Chaos Emperor said earlier about not being called names for being skinny, that's just not true.
I'm being called names al the time, things like that I must have anorexia or some other eating disorder. Or that I just do drugs or whatever, that's no fun either.
And I also know it's horrible being called fat and more ugly because of that. I used to be the fattest girl in class in primary school. But in high school I got sick for a long time and from that moment on I can't gain weight anymore.
And being to skinny can bring problems too. My body just hurts all the time because I don't have enough body fat. And it's the reason why I am cold all the time. Being underweighted means that muscle tissue gets broken down, so it's really hard to get fit again and it also makes you really tired, this makes things even harder.
I would just say that both things are hard to deal with when you feel it's holding you back in life.
I do not agree that it is easier to put on weight than to loose it. My doctors all tell me it's actually much harder to gain weight.
When I was 15 I was 59 kilo/130 pounds, now I'm 21 and 47 kilo/104 pounds, and for my length I'm really underweighted. But whatever I try I just seem to loose more weight every year.
And underweight is just a problem that gets to little attention, because nobody sees it as a problem. But just like obesitas in can lead to health problems. The most dangerous are organ failures, but also complications with pregnancy and girls can stop menstruating.