My friends always jokingly say that I talk their ears off... I don't often speak unless I have a unique point or something that others may not have thought of to contribute. Or if I'm just with 1 other person and even then I prefer to let them to the talking. I'd rather speak sporadically and be taken seriously then speak and be skimmed over. Although at times I can engage in chatter like the rest of society. If only to assure my friends that my mouth still works.
Maybe it's true what they're saying, most of the time we're not really talking just waiting our turn to speak.