(A)pathetic individual who lacks the will power/motivation to care enough about anything. Usually very whiny and pessimistic, often suffers from existential depression. One who is apathetic often possesses at least a small portion of an angster's qualities, but eventually dismisses them after they are deemed unimportant like everything else.
I could write a conversation that would provide a witty/sarcastic glimpse of an apathetic person's POV, but really, I doubt anyone really cares that much, cuz I know I don't.