I might, but I don't think that my favorite mangas would be anywhere near as good if they were books. There's a reason that people choose to tell their stories with this medium, and in large part it's because the stories they want to tell are told better with it. Any graphic medium requires a lot more effort to write than a book with a comparable amount of story. It's easy to forget that just because graphic novels are easier to read, that they're not a lot harder to write. Thought bubbles are extremely rare in modern graphic story-telling, so unlike a book where the author can tell you the character's thoughts, in a graphic story the author is limited to body language and conversation. Every frame in a manga or comic simply has to have a lot more purpose than any scene in a book is required to have.
Authors don't choose a more difficult medium for no reason, they choose it because it's the right medium for their story. To turn my favorite graphic tales into novels would remove from them a precious part of what made me love them in the first place.
