regarding the somewhat off-topic discussion of whether enlightened beings exhibit negative emotions or not, i think a big disconnect here is a matter of perspective and our definition of "enlightenment."
for this discussion, i'll use a description of enlightenment by Shinzen Young. his description of enlightenment is "happiness independent of conditions." i like that definition because it's very simple, yet very profound.
by that definition, GhostLLP has a point that enlightened beings *don't* experience negative emotions coz they're always happy

however, that may be true from the *first person* perspective of that enlightened being. but there's no way for us to know exactly because once an emotion (whether negative or positive) is observed it becomes a thing or a *third person* perspective. we can only project or deduce the *first person* perspective.
in other words, an enlightened being may express negative emotion from our point of view, but deep inside, that enlightened being is seeing the "negative" emotion as it is, hence, no suffering.
here's a good example of a story from Shinzen Young regarding his experience with his teacher, Zen Master Sasaki Roshi. (see page 6) - http://bit.ly/4qtAw5
we tend to project our idealized versions of enlightenment on other people, or some other teachers from time immemorial. i can site another concrete example in the Christian tradition.
a lot of Christians project on Christ's perfection. no negative emotions, accepting the Will of God, etc. but people forget the story of Christ's anger when he whipped the money traders in front of the temple. was that a negative emotion? from the outside, yeah it seems like it. but how does it look like from the first person of Christ? our answer to this question would depend on our level of development.
~C