Also, you don't know what species I am. Maybe I'm a dog. :-)
(https://en.wikipedia.org/wiki/On_the_Internet,_nobody_knows_...)
Also assuming psychopaths don‘t experience emotions is going going with a very fringe theory of psychology. Very likely psycopaths experience emotions, they are maybe just very different emotions from the ones you and I experience. I think a better example would be a comatose person.
That said I think talking about machine emotions is useless. I see emotions as a specific behavior state (that is you will behave in a more specific manner) given a specific pattern of stimuli. We can code our computers to do exactly that, but I think calling it emotions would just be confusing. Much rather I would simply call it a specific kind of state.