I hate when people ask me why am I so quiet? It's rude!
Imagine if I went to you and asked you why do you talk so much and don't know how to stfu. I think you'd consider me an inconsiderate asshole for asking you that. I'm quiet because thats who I am. I think some people ask this without mean intentions, but it doesn't negate the fact that it's rude. I won't question you about why you are the way you are, and please do the same for me.