When I'm in a situation or conversation where I can tell that others expect me to be talkative, I do it, but mostly just to accommodate them. It literally takes too much energy out of me; when I'm done I give a huge sigh and lie down for a minute, and am generally a little annoyed.
I'll respond politely, but that's about it. When someone asks how I'm doing, I'll answer. I'll say, "I'm fine" or "okay" or something like that. And that's it. I understand it's the overture to starting a conversation, but I don't recriprocate unless I actually care how a person is.
most of the time, it's yes, no, no thank you, and have a good day.
The weird thing is I expect the same when I initiate a conversation. If I ask about a what someone is doing, I really don't need a fifteen minute precursor about why their doing it before they answer my question.
The people I value are the ones whose conversations generally are limited to yes, no, no thank you, and have a good day.