I've been introverted my whole life and often times I say something only if I think it will add any real value to a conversation, I hate small talk for the most part and won't participate in it if it means I'm not really going to get to know or connect with someone. I also go through similar times when people think I look "sad" or "bored" at parties because I spend more time pondering and people-watching (but I'm always content and happy with that).

This article was truly spot on, great job :)