Sorry, Jack, but I suspect we’ll have to agree to disagree, here.
I can’t look at my work objectively, by definition, whether I write in Source Code Pro, Times New Roman, or Comic Sans. I write in fonts that give me two cues, one conscious and one not. The conscious cue is a font that makes every error painfully obvious—i.e., a programming font. The subconscious one is a font that screams “Not finished yet!” and to me that is a monospaced font.
When I want the reader’s perspective (and I do! I do!) I send my work to my beta readers and my editor. They get the fonts they prefer, and let me know just where I’m going wrong from a reader’s perspective. Working with a professional editor and beta readers has vastly improved my writing.
But no, working in a font that lets my eye elide errors and looks like a finished product doesn’t work for me. Believe me, I’ve used WYSIWYG editors since they were invented (literally), and I’m a better writer when I’m using plain monospaced fonts on my screen. (I suppose I could have my old Royal manual refurbished and go all the way back to paper manuscript, but I’m not quite that fanatic!)
But that’s me! Obviously you prefer to work differently, and that’s fine if it works for you. Scrivener will let you work that way if you want. But many new Scrivener users aren’t really clear that Scrivener writing can be quite separate from Scrivener formatting, so I tend to emphasise that in my posts. Truly, I tried to work WYSIWYG in Scriv when I first bought it, and when the light dawned that my manuscript could look like it just came out of a Teletype while I was writing, and yet look as polished as professional typesetting when I compiled output, I felt like the jail door had opened!
So, let’s each have our different ways to work, shall we? I don’t think I’m part of any problem, and I don’t think you’re part of any problem. All writers have the problem of seeing their work as their audience sees it, and you and I tackle that problem in quite different ways. Scrivener lets each of us work the way they prefer.