Thank you for the replies!
I think that part of the problem is that people assume that quiet people are empty or we are mistaken for being snobby. It seems men mistake me for being empty more often than rude. I am not boring or dull, I would just rather listen.
Just today I was with the friend I mentioned and her boyfriend came home from work and was ill. She got so angry at him because he was a bit grumpy, she did nothing to soothe him...she only nagged him. Yet, so many guys want to be with this type of girl? I will never understand it.