This is probably why I dislike extroverts (and should stop)

Because I spend more time---or at least think I spend more time---in a conversation asking questions about the other person than saying things about myself, and I---subconsciously, at least---expect others to reciprocate. And you get annoyed when they don't, and see it as a case of their monopolizing the discourse for their own ends. Except, you know, that's probably not the most helpful way to think about or deal with this. Especially not when you start to go into long cycles of resentment, variously directed and undirected anger, self-loathing, and rinse-and-repeat.