most narcs are low functioning, and here are some reasons why:
they can't hold down a job because they consider themselves above menial work
work is for other people, non-special people, aka peasants, aka you, people below them.
being a narcissist is similar to believing you are a special omnipotent god or a king, but being quite average in reality
it's an incredibly frustrating experience for them, which is why they are so angry alot of the time
they don't really respect or care about others so their personal and work relationships usually fall apart
anyone who tries to "fix" them gets used for their resources and discarded
the narcissists on here who are smelling themselves haven't alienated everyone in their lives just yet, but they will
their egos are full from feeding on the un-aware people around them, but, eventually, everyone will catch on to their games, and when the ego starves, they will lash out, and you will see the real them for the first time
they also desire the glory and admiration of being someone who is very accomplished, but without doing any of the work, which is why the vast majority are losers.
their lifestyle is parasitic, and depends on others for resources (food, money, a place to stay, even ego boosts) so do everything you can to avoid becoming one of their "hosts".