I view this as 2 separate things - mind versus body
I've interpreted that emotions are through the 'body.' 'Gut feeling' or 'love at the heart.' Many emotions, except for sadness and happiness, accelerate the breathing. Anxiety, envy, jeaously, etc. These are illusions brought on by the mind and we can live without them, I think. The mind is a controllable thing.
But laughing and crying SLOW the breathing down. Slow breathing is sought after in meditation - its relaxed and feels good. Someone passes away, you cry and you think about them while you do it, quite focused. Funny, when I meditate I focus on something; coincidence?
Laughing - things become less funny over time. Things need to be MORE vulgar (hey, there has to be an end at vulgarness soon (I can go pretty far but I'm using the same things to do it with)) or more creative.
Emotions can be weeding themselves out simply through 'knowledge.' The more you know on a subject, the less 'funny' IT becomes.
Elvis Presley pushed the limits in the 50's but what he did then doesn't come close to anything today. (this was an example of vulgarness leading to a more open mind)
So, there would be no fear as fear is based out of irrational thoughts. Sometimes, there IS nothing to fear. As well, during times of fear (warranted), it would be irrational to get caught up in the fear - you'd be a deer in the headlights < -- martial arts teaches confidence. Knowledge is protection.
The pursuit of knowledge and understanding would replace the emotions felt now. As well, we may end up viewing love 'differently' then we do now but it may still exist, just on a mental 'feeling' level, not a bodily one.
This is just my understanding and theory and crap - I've spent a great deal of time pondering this. My above 'writing' is pretty summed up, but I have theory on laughing and crying as well as emotion leaving (heading towards logic?). I've thought of the process of going from 'emotion' to 'logic' or 'feeling' to 'thinking.' There is emotional intelligence and intellectual intelligence. Afterall, how can "understanding" be a bad thing?