Emotions evolved as instinctual weights on decision making. In some cases like fear they override the slow thought process to drive action. In others they motivate you to accumulate more resources in order to be more attractive to partners, like jealousy. Most AI are driven by performance numbers and these are pseudo emotional. If these points are and the algorithms that drive them are designed well I could see them approximating an emotional response. The real question is this can make you money. I think it can because simulating human behavior is profitable and humans have emotions.