Hi Futuremind -
You ask a major question - are you ready for a lecture?
I found this definition of emotion: "A mental state that arises spontaneously rather than through conscious effort and is often accompanied by physiological changes; a feeling."
While I agree that emotions are accompanied by physiological changes (which is significant considering health issues), I don't think that emotions arise "spontaneously" without conscious effort. Emotions are energy - positive or negative. Ideally, we would feel mostly positive, or enjoyable emotions that contribute to health. So, why isn't that always the case?
Our brains process everything - even physical touch. Therefore, emotions are based on thoughts. Thoughts come before emotion, which is encouraging because you can learn to control your thoughts.
BTW - I believe that life continues after death & then feeling/sensing is the primary way of experience.