>>81913105 (OP)
Happy and Sad aren't meant to be anything more than fleeting emotional states. As emotions they aren't even all that they are cracked up to be. They act as reinforcement/punishment multipliers. You do something that gives you pleasure and then after the immediate physical sensation of pleasure you feel "Happy" as a way of your brain doubly associating the pleasurable event and the emotion of "happy" with what happened. Conversely when you do something painful there is the immediate sensation of pain and then there is the emotion of "sad" which acts as an extended punishment. So not only are you less likely to do the thing because of how it made you feel in the moment but because you then underwent an extended feeling of "being sad" about it you will be even less likely to do it.
But that's all that "happy" and "sad" are extensions of immediate sensations meant to better facilitate learning and alterations in behavior.
