I share your experience (lacking any inner voice), except when I'm staging words to be spoken (or written as a conversation). I'm a native English speaker, and

I share your experience (lacking any inner voice), except when I'm staging words to be spoken (or written as a conversation). I'm a native English speaker, and I never remember having an inner voice. Until reading a page linked here, I had thought I had mental imagery, but it sounds like I don't have that as others do, either.