stuck up grad students

Graduate school. yup I am here in Graduate School and what a different game it is. Today's complaint is about the unfriendly grad students. They do not smile, rarely even say "hello" and in general do not appear friendly. I have said hello to practically everyone I see. Even in the study group within a Interdisciplinary course, they are unfriendly. It must be me. But what am I being viewed as? Not intelligent? Boring? Unfriendly? Mean? Communist? ugly? i feel like the last one, ugly, cause no body is picking me for their team. VICTIM!