you know, I'm like that too. Not hate, persay, but they just irritate me. I think the reason for me (and it is sa for me) is because I physically just don't feel very good around people I don't know very well - they make me nervous, so I feel uncomfortable. So, I don't really hate them specifically, I just hate that feeling and therefore blame the cause of that feeling (even though the cause is really me, I guess.)
Its just like, they give me a headache sometimes.