So, none of the examples given so far convince me. I remember a couple of bits where you get multiple levels of nested indentation, to the point where the text

So, none of the examples given so far convince me. I remember a couple of bits where you get multiple levels of nested indentation, to the point where the text started half-way across the page, and those would be difficult on most e-reader screens. You would lose something when converting to ebook, no doubt. But the convenience might also make it worthwhile. (Stretched analogy: I have heard that Pink Floyd's vinyl album Atom Heart Mother was cut so that at the end, it just kept playing the inner ring in a loop instead of finishing, so you got the repeating sound of a dripping tap. That would be lost as an mp3, but I'd still rather have the digital version.)