If you are happy as you are and don’t want to lose weight, why would you be eating less in the first place much less running into psychological problems preventing you from doing so?
If the part I don’t understand is that there is no such thing as being overweight and happy, and people who feel that way have psychological defects, then it’s not that I don’t understand your point but I do disagree.
Maybe you should have a serious dialogue with any obese person to figure out why it is hard for them if you care about forming a model of the world that represents actual reality.
Most obese people are not happy with their body or the ways their eating habits impact their live in many ways. Most obese people are also happy when they eat or worse: they are unhappy when they don't eat.
If eating gives you a short term improvement even if it makes you unhappy in the long term then you might just do it, like in any other addiction (btw. a well researched topic).
The way out of this is not to "just eat less", the way out of this is to tackle the reason why you only can be happy when eating and then eat less.
the psychology was just described to you above. Not sure what foundation you have to "disagree" with. Human actions and thought patterns are not some libertarian utopia of perfect rational behavior based on an economics equation
If the part I don’t understand is that there is no such thing as being overweight and happy, and people who feel that way have psychological defects, then it’s not that I don’t understand your point but I do disagree.