I, too, dislike being asked uncomfortable questions, whether at social events or if it's just a one on one person. It makes the situation very awkward for me, and when people try to even force me to answer those questions. They're not only Why are you so quiet but why don't you have friends, what are you going to do with the rest of your life, ect. I try not let my irritation show, but it bares my teeth and I have to sit there and stay silent. It's pretty much how people create those questions, how they say it, that makes me feel guilty about myself. I have trouble myself coming back with an answer that doesn't sound like the other person is going to judge me on or guilt trip me about. And when I don't answer their questions they go "Umm, Hello? Speak up." I hate that.