Why would I ever want an edit mode and a preview mode while taking notes? Don't I want to be able to both see my note and edit it at any time?
I mean, I guess I could just ignore preview mode if the edit mode actually allowed me to see all of the content of my note, but it doesn't. Images are only visible in preview mode. So all the talk about transclusion seems dumb to me. I can't see jack unless I decide to stop working and start viewing. I just don't get it. Is this really what people do? Switch back and forth between editing and viewing all the time?
Or perhaps they just decide to put all the content of the note on-screen twice? But why would I ever want to look at the same content twice? We're not talking about folding, so I can see two different places in the same note. We're talking viewing the exact same content twice, cutting my usable screen real estate in half for displaying the content of my note. So I have 50% of the context I could have... And don't even get me started about how synchronized scrolling is impossible in this view if you use images in your note.
I feel like I must be taking crazy pills, because everybody seems to love using markdown, and I really want to like it, too. I know the benefits of plaintext. But I just don't get making that sort of usability sacrifice.