For what it's worth, I'm also completely worthless at art, despite being on the opposite end of the visualization spectrum -- I can easily conjure very detailed

For what it's worth, I'm also completely worthless at art, despite being on the opposite end of the visualization spectrum -- I can easily conjure very detailed visual (and sonic) impressions in my mind's eye, and the act of reading itself for me cannot be decoupled from "hearing" the words (tone and all) in my head. It's depressing in a totally different sense, because I can never capture on paper the things that I visualize -- I just don't have the knack for art.