I’m an introvert. In fact if you know about Myers Briggs Psychological Typing, I’m and INTJ. I find crowds difficult. I prefer one on one or very small groups when interacting. Sure I’m happy to get up and speak to hundreds of people, but I need you to come and talk to me afterwards, don’t expect me to work the room. This was an interesting piece about introversion, and yes, I’ve often been told I’m a snob, when in fact it’s just that I’m introverted (and was also very shy as a child).
Some books on the subject