Emotion is not a sufficient condition for consciousness because there are other essential elements required for consciousness to exist. For example there must also be the ability of sense or we would not have experience; and experience is an important quality to determine whether we are conscious. The reason this is the case, is because without experience we would not know what things are and whether they have meaning (a world without meaning is not an environment for consciousness). Nevertheless, emotion is a necessary condition for consciousness, because without it we are left in a situation where we are unresponsive to what we experience (remember experience is essential for knowing whether or not we have consciousness). Emotion is both necessary and sufficient for cognition, it is our response to the way we learn, perceive and make concepts for anything in the world (at the very least it is influential in the way of being both necessary and sufficient—for what we know about cognition anyways). The issue here is that we do not know enough about our cognition to determine whether we can respond without any sense of judgment (emotions drive our judgments). However, if I ignore this assumption and assume that emotion is not necessary or sufficient for cognition, then I am assuming that unresponsiveness means that I am cognitively awake. This cannot be, because only dead/coma people are in this state. Even when we are dreaming, even if we think that we are conscious and hold emotion, it is taking place in a fake state. In this case emotions will not hold as a necessary and sufficient condition, merely because in our dreams nothing matter even if we think we have emotions/responsiveness to what we think we experience (sort of like a brain in a vat example). As long as we are in the real world (which we cannot be accurately sure about because of the brain in a vat example) emotions have to remain as a necessary and sufficient condition for our cognition.
The functions of our emotions are to give us a response to our experience (in a way letting us indirectly know what kind of experiences we have). For example: I will be angry if someone punched me in the face. I think building robots with real emotions, or designing them to simulate emotions will change the nature of human emotions because what we classify as human emotions (i.e. the response to experience) is how we know our consciousness in general. Now if this quality is imitated or recreated artificially, that will change the high standard of how we view ourselves as conscious people. Therefore, less passion will be attached to the emotions we once held. If this is the case then our judgments will not be as dependent on our emotions as before. If this is the case, I believe that our very actions will be purely Utilitarian-based where only the consequence matters. (i.e. Therefore I will not care if shove a fat man in front of a trolley if his mass stops the trolley from running over what I consider to be my more valuable chickens).
