I didn't have to read very far before I came to the point where you expressed much the same thinking as I've encountered elsewhere regarding Happiness and desire, without which, so the claim goes, we wouldn't be motivated--have the will--to do anything. What about survival? Believe it or not, emotions have survival value. Characteristic or chronic emotions are, in my opinion, directly related to issues of overpopulation. Characteristic or chronic Happy behavior (wide open face, great big grin, bouncing off the walls, laughing, sense of humor) reflects conditions of overcrowding growing up. The instinct of such people is to flee. A Happy person is a flighty person. This is experienced in a Family environment, or the equivalent. Their basic need is for Air--Space.
Sad people (less open face--the expression of surprise--slowness, like slogging through wet cement, and tears and crying) grew up in relative poverty, and are focussed on the basic need for Food & Water resources, instinctively dodging--trying to get out of, or from under, something. This applies to behavior at funerals as well. This is also experienced in a Family environment, or the equivalent.
Indifferent people (comfortably open eyes and closed mouth, mechanical, routine behavior) grew up in stifling conditions--that is, in virtually immobilizing conditions (Japan, for example). As with Happy behavior, the issue is Air--Space, and such people are inclined, instinctively, to hide. This is experienced in a societal environment.
Mad people (to me likely to screw up their faces in a decidedly closed expression--tight-lipped, grim) grew up in hardship, with Food & Water resources stretched to the limit. Fighting is consistent with an "Every man for himself"-mentality.
Now, I realize that this calls into question long-held beliefs about the self or soul, but come on--isn't survival in reality just as much a concern for us as it is for that which we call animals?