I speak nearly every night in my dreams. Speaking has become a mechanism by which i recognize that i am indeed dreaming and that i am asleep.
It is not part of any deep desire on my part to start talking again, no such desire exists. I think it's similar to those dreams where i find myself out in public completely naked. At first i'm embarrassed and self conscious, then part of me that realizes that everything isn't "right", that it's absurd. When i start to really think about it, it causes me to wake up. With a great sense of relief, i reassure myself that it never really happened.